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Journal articles on the topic 'Corrugated structure'
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1
Wang, Dong Mei, Qiang Hua Liao, and Zi You Bai. "Energy Absorption Properties of Folded Honeycomb Structure Consisting of Corrugated Paperboard." Advanced Materials Research 160-162 (November 2010): 1488–93. http://dx.doi.org/10.4028/www.scientific.net/amr.160-162.1488.
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Many experiments and analysis of folded honeycomb consisting of corrugated paperboards show that the use of linerboard can increase the energy absorption and weight of folded honeycombs. However, it reduces the energy absorption per unit volume and unit mass and increases the cushioning cost either. For the same corrugate shape, reducing corrugated size will increase the weight of folded honeycombs, and changing corrugated size will change the energy absorption per unit volume, but it can not change the cushioning cost. At a low relative density of corrugated sandwiches, the energy absorption per unit volume and unit mass rapidly increases, and the cushioning cost decreases when the relative density of corrugated sandwiches rises. While at a higher relative density, the energy absorption per unit volume and unit mass does not effectively increase with relative density of corrugated sandwiches. However, the cushioning cost may increases. Therefore, when designing the corrugated sandwich size, we can change the thickness of corrugate basis-paper or the corrugated size to change the relative density of corrugated sandwiches and the cushioning cost.
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Li, Jie, Han Wang, Xianghao Kong, Zhiwei Jiao, and Weimin Yang. "Additively Manufactured Bionic Corrugated Lightweight Honeycomb Structures with Controlled Deformation Load-Bearing Properties." Materials 17, no. 10 (2024): 2274. http://dx.doi.org/10.3390/ma17102274.
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The rapid development of additive manufacturing (AM) has facilitated the creation of bionic lightweight, energy-absorbing structures, enabling the implementation of more sophisticated internal structural designs. For protective structures, the utilization of artificially controlled deformation patterns can effectively reduce uncertainties arising from random structural damage and enhance deformation stability. This paper proposed a bionic corrugated lightweight honeycomb structure with controllable deformation. The force on the onset state of deformation of the overall structure was investigated, and the possibility of controlled deformation in the homogeneous structure was compared with that in the corrugated structure. The corrugated structures exhibited a second load-bearing capacity wave peak, with the load-bearing capacity reaching 60.7% to 117.29% of the first load-bearing peak. The damage morphology of the corrugated structure still maintained relative integrity. In terms of energy absorption capacity, the corrugated lightweight structure has a much stronger energy absorption capacity than the homogeneous structure due to the second peak of the load carrying capacity. The findings of this study suggested that the combination of geometric customization and longitudinal corrugation through additive manufacturing offers a promising approach for the development of high-performance energy-absorbing structures.
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DiSanto, Fabricio N. "Corrugated panel structure." Journal of the Acoustical Society of America 102, no. 3 (1997): 1280. http://dx.doi.org/10.1121/1.420007.
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Xu, Minghao, Wei Xia, Xin Zhang, and Shuling Hu. "Three-dimensional CFD model and aerodynamic analysis of dragonfly’s corrugated wing during gliding." Journal of Physics: Conference Series 2879, no. 1 (2024): 012052. http://dx.doi.org/10.1088/1742-6596/2879/1/012052.
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Abstract The aerodynamic performance of micro air vehicles (MAVs) in low-speed flight would be improved by mimicking the dragonfly’s wing with corrugated airfoil. Research on two-dimensional corrugated airfoils has revealed that the local vortex in the corrugated structure increases the flow speed and the lift-to-drag ratio in low Reynolds numbers. However, studies seldom focus on the effects of three-dimensional corrugated structures on aerodynamics. In this paper, the mechanism of high aerodynamic performance in a dragonfly’s wing is studied considering a three-dimensional corrugated structure. The high-fidelity dragonfly forewing model is established through reverse engineering. The computational fluid dynamics (CFD) simulation is performed for the gliding corrugated wing with angles of attack (AOA) of 0°-24° under three Reynolds numbers. The flow characteristics of corrugated wings and the aerodynamic gain from it are analyzed through the simulated streamlines and pressure contours, as well as the comparison between the corrugated wing, flat wing, and flat plate. The results show that the aerodynamic characteristics of corrugated wings are generally superior. Although the introduction of the corrugated structure increases some drag, it brings a higher lift and lift-to-drag ratio than the flat wings.
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Tian, Ce, Zhimin Tian, Xinwei Cao, and Shangwei Dong. "Lightweight design of composite sandwich corrugated structures based on variable density method." Journal of Physics: Conference Series 2808, no. 1 (2024): 012076. http://dx.doi.org/10.1088/1742-6596/2808/1/012076.
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Abstract For the lightweight design of composite sandwich corrugated structures, a new topology optimization design scheme is proposed using the variable density method. Multi-working conditions static analysis of the composite sandwich corrugated structure is carried out by finite element software. Then, the topology optimization is carried out by using the minimum flexibility method. Finally, the results of different working conditions are coupled to propose a new composite sandwich corrugated structure. The results indicate that the structure has a weight reduction of 34% and exhibits periodicity and continuity while also meeting the necessary mechanical properties to fulfill the engineering requirements. The optimization of composite sandwich corrugated structures has been achieved, providing a new approach to the lightweight design of composite sandwich structures.
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Ding, Wenqi, Xuanbo Huang, Chengshuo Yu, Qingzhao Zhang, and Tianxiang Wu. "Calculation Method of New Assembled Corrugated Steel Initial Support Structure of Highway Tunnel." Applied Sciences 14, no. 16 (2024): 7242. http://dx.doi.org/10.3390/app14167242.
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The assembled corrugated steel initial support structure is a new prefabricated structure in highway tunnel engineering, achieving a balance between economy and safety. This study proposes a simplified calculation method and elucidates the mechanical mechanisms of assembled corrugated steel initial support structures. Firstly, the stiffness characteristics of corrugated steel plates were studied based on full-scale tests. A general equivalent stiffness coefficient table was established. Numerical simulations of corrugated steel flange joints were conducted to explore their bending mechanical properties. A two-stage rotational stiffness model for corrugated steel flange joints was proposed. Finally, a plane strain-spring simplified calculation method for the assembled corrugated steel initial support structure was developed, and the monitoring data from the Qipanshan Tunnel validated the correctness and reliability of the proposed method. The results demonstrate that (1) the plane strain-spring simplified model consists of the planar strain equivalent calculation method for corrugated steel plates and the two-line stiffness equivalent spring of the corrugated steel flange joint. The simplified model was validated as effective by monitoring data. (2) Corrugated steel plates exhibit two stages under loading, namely gap elimination and elastic stages. The elastic stage stiffness of corrugated steel plates decreases with increasing ratio of depth to pitch (RDP), positively correlating with plate thickness when the RDP exceeds 0.333 and otherwise negatively correlated. (3) Corrugated steel lining flange joints exhibit distinct elastic and plastic stages in their linear moment–rotation curves under loading.
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Liu, Baodong, Zongmin Liu, Miaoxin Zhang, and Quanlu Wang. "Study on Impact Parameters of Rigidity and Flexibility for Buried Corrugated Steel Culvert." Open Civil Engineering Journal 8, no. 1 (2014): 14–22. http://dx.doi.org/10.2174/1874149501408010014.
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Buried corrugated steel culverts are universally regarded as a structure with strong deformation adaptability and dispersed the upper load by corrugated steel structures surrounding soil constraints to enhance the carrying capacity and the use of soil-structure interaction. A lot of factors influence the earth pressure of the buried corrugated steel culvert, such as culvert stiffness, physical characteristics of the backfill (bulk density, deformation modulus and internal friction angle), geometry of structure and backfilling height. The finite element program of ANSYS has been used to research the elastic modulus, Poisson’s ratio, internal friction angle of soil, inertia moment of corrugated steel plate and pipe diameter affect the rigidity and flexibility of buried corrugated steel culvert. By defining path lines in the finite element post-processing, extracting and comparing the horizontal and vertical directions soil displacements along the lines, and doing impact pa-rameter analysis. Classification for flexible and rigid pipes of the buried corrugated steel pipe culvert structure has been made according to the analysis results. A theoretical reference has been provided for the design and construction of the buried corrugated steel pipe culverts.
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Wang, Dong Mei. "Evaluation Equation of the Flat Compression Properties of Corrugated Sandwich Structure." Advanced Materials Research 189-193 (February 2011): 202–7. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.202.
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The flat compression properties of corrugated sandwich structure are an important factor to evaluate their cushioning properties. At present, more research has been made on the mechanical properties in the cross direction (CD) and machine direction (MD), but less has been made in the flat compression direction. Selecting corrugated paperboards as samples, we analyzed the flat compression properties of the corrugated sandwich structure and explored the critical stress which is a key element for evaluating the cushioning properties based on theory and experiment. It is convenient to evaluate the cushioning properties and optimize the corrugated sandwich structure. Simplifying the corrugated structure into the struts, and referring to the bending theory of the standard beam theory, we explored the evaluating equation of the critical stress for corrugated sandwich structure by the bending moment and Euler formulas. The critical stress is in direct proportion to the elastic modulus and the thickness of the basis material. It is also closely related to the length of the corrugated cell-wall and the pasted width between the corrugated cell-wall and the linerboard. Changing the above parameters, we can change the compression resistance of the corrugated sandwich structure. The theoretical value of the critical stress of the corrugated sandwich structure is higher than the experimental value, since the mechanical properties are lost when the basis material is manufactured into corrugated sandwiches and corrugated boards. Therefore, the lost coefficient is introduced into the theoretic equation which can not only help optimize and design the corrugated sandwich structure, but also find application in optimized design of cushioning pads of corrugated sandwich structure.
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Koltsov, Vladimir, Elizaveta Popova, and Valentina Rakitskaya. "Engineering Analysis of Structural Variants of Corrugated Aperture in the Environment MSC.Patran/MSC.Marc." Advanced Materials Research 1040 (September 2014): 892–97. http://dx.doi.org/10.4028/www.scientific.net/amr.1040.892.
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This article provides the results of the study of the strain-stress state of two corrugated shell structures. Geometric modeling was conducted in “Autodesk Inventor” system. Corrugated shell structures were studied with the help of engineering analysis systems MSC.Patran and MSC.Marc. As a result of the study an optimal type of corrugated shell structure was chosen.
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Kаrnakov, І., V. Коvalchuk, and А. Onyshchenko. "ASSESSMENT OF THE STATE OF STRESS AND DEFORMATION OF METAL CORRUGATED PIPE STRUCTURES TAKING INTO ACCOUNT ITS DIAMETER AND THICKNESSES OF THE CORRUGATED SHEET." Modern construction and architecture, no. 3 (March 30, 2023): 33–40. http://dx.doi.org/10.31650/2786-6696-2023-3-33-40.
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The analysis of research works on the assessment of the stress-strain state of prefabricated metal corrugated structures of transport facilities was performed. It was established that the stresses and deformations of structures made of ZMGK depend on a complex of influencing factors: the amount of static and dynamic loads, the height of the backfill above the vault of the structure, the parameters of corrugation waves, etc. However, the interconnected effect of the pipe diameter and the thickness of the metal corrugated sheet on the stresses that occur in the metal pipe structures has not been established. The object of research is metal corrugated pipe constructions. To assess the stress state of the pipe, the influence on the stress of the cross-section of the pipe and the thickness of the metal corrugated sheet of the structure are taken into account. It was established that the geometric parameters of the cross-section of the pipe and the thickness of the metal corrugated sheet of the structure have a significant influence on the stress state of metal corrugated pipe structures. When the diameter of the pipe increases, the amount of stress that occurs in metal structures increases. However, with an increase in the thickness of the corrugated sheet, the amount of stress, with the same pipe diameter, decreases. Increasing the thickness of the sheet from 3.0 mm to 7.0 mm leads to a decrease in the stresses in the pipe metal by 50.39%. When the diameter of the pipe changes from 1.0 m to 6.0 m with a metal thickness of the corrugated sheet equal to 3.0 mm, the magnitude of the stresses increased by 7.38 times, with a sheet thickness of 4.0 mm ‒ by 7.8 times, with a thickness of 5.0 mm sheet – 8.08 times, 6.0 mm sheet thickness – 8.28 times, and 7.0 mm corrugated pipe sheet thickness – 8.43 times. It was established that the gradual increase in the thickness of the corrugated sheet of the structure leads to a decrease in the stress difference between the previous thickness of the sheet and the increased one. With a pipe diameter of 6.0 m, the stress difference that occurs when the thickness of the corrugated sheet is 3.0 mm and 4.0 mm is 21.35 MPa, with a thickness of 4.0 mm and 5.0 mm, the stress difference is 14.16 MPa, at 5.0 mm and 6.0 mm, the difference in stress values is 10.25 MPa, and with increased sheet thickness from 6.0 mm to 7.0 mm, the difference in stress values is 7.76 MPa. The obtained results of the stress state of prefab metal corrugated pipe structures can have practical application in the case of acceptance of the technical and economic justification, regarding the determination of the pipe diameter and the thickness of the metal corrugated sheet of the structure. One of the limitations of the application of these research results is the assessment of the stress state of the pipe made of prefabricated metal corrugated structures with the parameters of the corrugated waves of 150×50 mm. Other parameters of corrugation waves are not taken into account in this study.
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Le, Vinh Tung, and Nam Seo Goo. "Thermomechanical Performance of Bio-Inspired Corrugated-Core Sandwich Structure for a Thermal Protection System Panel." Applied Sciences 9, no. 24 (2019): 5541. http://dx.doi.org/10.3390/app9245541.
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A skin structure for thermal protection is one of the most interesting components that needs to be considered in the design of a hypersonic vehicle. The thermal protection structure, if a dense structure is used, is heavy and has a large heat conduction path. Thus, a lightweight, high strength structure is preferable. Currently, for designing a lightweight structure with high strength, natural materials are of great interest for achieving low density, high strength, and toughness. This paper presents bio-inspired lightweight structures that ensure high strength for a thermal protection system (TPS). A sinusoidal shape inspired by the microstructure of the dactyl club of Odontodactylus scyllarus, known as the peacock mantis shrimp, is presented with two different geometries, a unidirectionally corrugated core sandwich structure (UCS) and a bidirectionally corrugated core sandwich structure (BCS). Thermomechanical analysis of the two corrugated core structures is performed under simulated aerodynamic heating, and the total deflection and thermal stress are presented. The maximum deflection of the present sandwich structure throughout a mission flight was 1.74 mm for the UCS and 2.04 mm for the BCS. Compared with the dense structure used for the skin structure of the TPS, the bio-inspired corrugated core sandwich structures achieved about a 65% weight reduction, while the deflections still satisfied the limits for delaying the hypersonic boundary layer transition. Moreover, we first fabricated the BCS to test the thermomechanical behaviors under a thermal load. Finally, we examined the influence of the core thickness, face-sheet thickness, and emittance in the simulation model to identify appropriate structural parameters in the TPS optimization. The present corrugated core sandwich structures could be employed as a skin structure for metallic TPS panels instead of the honeycomb sandwich structure.
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Dear, Terrence A. "Acoustically inactive corrugated structure." Journal of the Acoustical Society of America 102, no. 2 (1997): 681. http://dx.doi.org/10.1121/1.419920.
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Yuan, Wei, Jin Xin Sun, Gai Mei Zhang, Da Zhi Liao, and Ya Jun Wang. "Corrugated Board UV Flute-Shaped Structure Size Optimization Design Based on the Finite Element." Applied Mechanics and Materials 469 (November 2013): 213–16. http://dx.doi.org/10.4028/www.scientific.net/amm.469.213.
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UV-shaped corrugated cardboard Fusion V-shaped and U-shaped structure the advantages made, to make up for the lack of V-type and two U-shaped corrugated cardboard, the higher the compressive strength, good elasticity, is widely used UV type corrugated manufacturing corrugated board. But no strict standards for UV-shaped concrete structure of corrugated board size parameter corresponding corrugating roll no uniform size of the corrugated shape, in order to achieve the best elasticity and compressive strength. First, by mathematical methods, the corrugated structure is analyzed, and analysis to facilitate research, to select the 1/4 cycle corrugated. Create multiple vertical auxiliary line level is divided into 10 equal parts, to identify key points in shape between the V-shaped and U-shaped curve, connecting into multiple segments curve. Studied the actual thickness of the corrugated board of 3.8mm, a smaller thickness and therefore a straight line can be connected to each group of the resultant key points simplify the corrugated curve, model 1/4 of a cycle of UV-shaped corrugated first determined, using the symmetry of the model to establish a cycle, 300mm side length of the square created by one cycle of replication, about 38 of the corrugated board corrugated cycle. Use of finite element analysis in ANSYS corrugated structure, including a gradual transition to a simplified model of the 11 U-shaped flute-shaped corrugated cardboard from the V-shaped set of material properties, loads are cloth pressure, research corrugated cardboard stress and strain, i.e., the smaller the radius of curvature of the curve can be obtained along corrugated, the closer the U-shaped, corrugated board having a larger strain, i.e. has good flexibility, consistent with the empirical data to prove the feasibility of this analysis method.
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Abramov, Volodymyr. "Calculation of the load capacity of an arched road structure fromcorrugated metal by analytical method." Dorogi i mosti 2024, no. 30 (2024): 345–52. http://dx.doi.org/10.36100/dorogimosti2024.30.345.
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Introduction. One of the possible options for a simple, practical design of an arched road structure (small bridge) made of corrugated metal is considered, which can be considered as one that is more accurate and labor-intensive for the design of such a structure under the road pressure, as the “structure – soil” system for finite element method. Problem Statement. Regular normative and methodological documents for the design and maintenance of road structures (culverts, small bridges, tunnels) made of corrugated metal provide a simple formula for the structure of the structure and deformation of the body for such structures round pipes. The world is constantly streaming a wider range of rational and fairly simple types of road structures. Purpose. To show one of the possible ways of calculating an arched road structure made of corrugated metal on the basis of generally accepted initial provisions and a simple, understandable calculation scheme is the goal and task of this work.
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Yuan, Wei, Gai Mei Zhang, Da Zhi Liao, and Jing Liu. "Corrugated Board Flute-Shaped Finite Element Analysis and Optimization." Applied Mechanics and Materials 477-478 (December 2013): 1205–9. http://dx.doi.org/10.4028/www.scientific.net/amm.477-478.1205.
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UV-shaped corrugated cardboard Fusion V-shaped and U-shaped structure the advantages made, to make up for the lack of V-type and two U-shaped corrugated cardboard, the higher the compressive strength, good elasticity, is widely used UV type corrugated manufacturing corrugated board. But no strict standards for UV-shaped concrete structure of corrugated board size parameter corresponding corrugating roll no uniform size of the corrugated shape, in order to achieve the best elasticity and compressive strength. First, by mathematical methods, the corrugated structure is analyzed, and analysis to facilitate research, to select the 1/4 cycle corrugated. Create multiple vertical auxiliary line level is divided into 10 equal parts, to identify key points in shape between the V-shaped and U-shaped curve, connecting into multiple segments curve. Studied the actual thickness of the corrugated board of 3.8mm, a smaller thickness and therefore a straight line can be connected to each group of the resultant key points simplify the corrugated curve, model 1/4 of a cycle of UV-shaped corrugated first determined, using the symmetry of the model to establish a cycle, 300mm side length of the square created by one cycle of replication, about 38 of the corrugated board corrugated cycle. Use of finite element analysis in ANSYS corrugated structure, including a gradual transition to a simplified model of the 11 U-shaped flute-shaped corrugated cardboard from the V-shaped set of material properties, loads are cloth pressure, research corrugated cardboard stress and strain, i.e., the smaller the radius of curvature of the curve can be obtained along corrugated, the closer the U-shaped, corrugated board having a larger strain, i.e. has good flexibility, consistent with the empirical data to prove the feasibility of this analysis method.
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Pan, Shi Dong, Zhen Gong Zhou, and Lin Zhi Wu. "Optimal Design of Corrugated Ribbon Sandwich Structure Subjected to Biaxial Shear Loads." Advanced Materials Research 773 (September 2013): 549–54. http://dx.doi.org/10.4028/www.scientific.net/amr.773.549.
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In this paper, in order to enhance the equivalent shear strength of the corrugated ribbon sandwich structures, one new optimal design concept is brought forward to design the corrugated ribbon sandwich structures subjected to biaxial shear loads. Based on the performance harmony concept, the equivalent shear properties have been investigated and given. Analytical results show that the equivalent shear properties of the corrugated ribbon sandwich structure depend on not only the lattice truss cores, but also the facesheets, the interface and the shear loads imposed on the facesheets.
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Ma, Jin Hong, Bin Tao, and Xiao Han Yao. "The Rolling Deformation Characteristics of Rail with Corrugated Web." Advanced Materials Research 898 (February 2014): 197–200. http://dx.doi.org/10.4028/www.scientific.net/amr.898.197.
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Applying the research result of the whole corrugated web H-beam to rail structure, a new kind of rail structure, the corrugated web rail was generated. The special structure rail was successfully rolled in the Research Mill Institute of Yanshan University. This experiment proved that rolling force of corrugated web rail was greater. Based on the software ANSYS/LS-DYNY, the rolling process of corrugated web rail is simulated. Comparing with rolling traditional rail, nip condition, deformation zone, elongation modulus, zone of slippage on the delivery side and on the entry side of rolling corrugated web rail are analyzed, Through the analysis of the character of rolling corrugated web rail, the reason of greater rolling force is found out.
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Ma, Jin Hong, Bin Tao, and Xiao Han Yao. "Corrugated Waist Rail Microstructure Evolution Simulation." Advanced Materials Research 989-994 (July 2014): 425–28. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.425.
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Applying the research result of the whole corrugated web H-beam to rail structure, a new kind of rail structure, the corrugated web rail was generated. The special structure rail was successfully rolled in the Research Mill Institute of Yanshan University. Based on the finite element analysis software DEFORM-3D, the rolling process of corrugated waist rail is simulated. The miscrostructure evolution of rolling corrugated waist rail is analysed. The relationship between miscrostructure evolution and deformation are also analysed.
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Wang, Chen, Hamed Haddad Khodaparast, Michael I. Friswell, Alexander D. Shaw, Yuying Xia, and Peter Walters. "Development of a morphing wingtip based on compliant structures." Journal of Intelligent Material Systems and Structures 29, no. 16 (2018): 3293–304. http://dx.doi.org/10.1177/1045389x18783076.
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Compliant structures, such as flexible corrugated panels and honeycomb structures, are promising structural solutions for morphing aircraft. The compliant structure can be tailored to carry aerodynamic loads and achieve the geometry change simultaneously, while the reliability of the morphing aircraft can be guaranteed if conventional components and materials are used in the fabrication of the morphing structure. In this article, a compliant structure is proposed to change the dihedral angle of a morphing wingtip. Unsymmetrical stiffness is introduced in the compliant structure to induce the rotation of the structure. Trapezoidal corrugated panels are used, whose geometry parameters can be tailored to provide the stiffness asymmetry. An equivalent model of the corrugated panel is employed to calculate the deformation of the compliant structure. To provide the airfoil shape, a flexible honeycomb structure is used in the leading and trailing edges. An optimisation is performed to determine the geometry variables, while also considering the actuator requirements and the available space to instal the compliant structure. An experimental prototype has been manufactured to demonstrate the deformation of the morphing wingtip and conduct basic wind tunnel tests.
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Onyshchenko, Artur, Vitalii Kovalchuk, Ihor Karnakov, Mykola Harkusha, and Yuliia Balashova. "INCREASING THE BEARING CAPACITY OF THE FOUNDATION IN THE CONSTRUCTION OF STRUCTURES FROM METAL CORRUGATED STRUCTURES IN THE CONDITIONS OF WEAK SOILS." Automobile Roads and Road Construction, no. 115.2 (2024): 121–36. https://doi.org/10.33744/0365-8171-2024-115.2-121-136.
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Summary. The article is devoted to conducting research aimed at increasing the load-bearing capacity of foundations during the construction of structures made of metal corrugated structures. The purpose of the work is to increase the load-bearing capacity of the foundations during the construction of structures made of metal corrugated structures on weak soils. This will make it possible to ensure the reliable and long-lasting operation of transport structures made of prefabricated metal corrugated structures during the construction and operation of structures. The object of research is the foundation of a transport structure made of metal corrugated structures in the conditions of weak soils. A study of the stress-deformation state of the foundation of a transport structure made of metal corrugated structures under the conditions of weak soils was carried out, taking into account the parameters of the soils obtained in the process of engineering-geological sectioning. It is proposed to strengthen the base of the structure on weak soils by the method of installing reinforced concrete piles. The results of calculations of the stress-strain state of the base without reinforcement showed that the maximum value of the total displacements is about 5.12 cm, which is unacceptable in terms of deformations for a concrete coating. At the same time, the value of vertical stresses is 803.5 kN/m2. Therefore, to compensate for the initial deformations, it is recommended to apply a load on the entire area of the site with a load of 10 kN/m. Due to the loading, we maximally remove stress and deformation before arranging the structures of the building. When using piles to strengthen the base on weak soils, it was found that the maximum value of the total displacements at the stage of loading was 2.36 cm, which is permissible in terms of deformations for a concrete coating. It was established that the main risks in the construction of transport facilities on weak soils are deformations of the soil base. They can appear during the transmission of forces from the transport structure and variable loads, as well as from changes in the physical and mechanical properties of the foundation soils during the construction and operation of the structure. Key words: transport structure, metal corrugated structures, base, stress, deformations.
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Bareikis, Nerijus. "Parametric analysis of innovative corrugated profile of soil‐steel composite bridge." ce/papers 7, no. 3-4 (2024): 94–99. http://dx.doi.org/10.1002/cepa.3072.
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AbstractComposite soil‐steel corrugated structures are well recognized and widely used for construction of culverts and pedestrian or animal crossings. Moreover, for the past decade corrugated soil‐steel structures because of their large span are also recognized and chosen for bridges and tunnels engineering. Record holder composite corrugated structure of 32.40 m span encourages new research in the development of innovations. This paper investigates innovative the deepest corrugation cross‐section strengthened with circular hollow section steel pipes influence on plate utilization of large span soil‐steel composite bridge. The numerical 2D model of 17.5 m span structure was developed for investigation. Parametric analysis indicated that introduction of circular pipes will reduce corrugated profile steel thickness because of reduction of buckling length of straight region of corrugation. Moreover, 3D numerical analysis of buckling shapes allowed to conclude that local buckling of the deepest corrugation of 500 × 237 mm could be controlled strengthening the plates with circular steel pipes.
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Yang, Lung-Jieh, Vivek-Jabaraj Joseph, Neethish-Kumar Unnam, and Balasubramanian Esakki. "Design and Numerical Simulation of Biomimetic Structures to Capture Particles in a Microchannel." Fluids 7, no. 1 (2022): 32. http://dx.doi.org/10.3390/fluids7010032.
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The study of separating different sizes of particles through a microchannel has been an interest in recent years and the primary attention of this study is to isolate the particles to the specific outlets. The present work highly focuses on the design and numerical analysis of a microchip and the microparticles capture using special structures like corrugated dragonfly wing structure and cilia walls. The special biomimetic structured corrugated wing is taken from the cross-sectional area of the dragonfly wing and cilia structure is obtained from the epithelium terminal bronchioles to the larynx from the human body. Parametric studies were conducted on different sizes of microchip scaled and tested up in the range between 2–6 mm and the thickness was assigned as 80 µm in both dragonfly wing structure and cilia walls. The microflow channel is a low Reynolds number regime and with the help of the special structures, the flow inside the microchannel is pinched and a sinusoidal waveform pattern is observed. The pinched flow with sinusoidal waveform carries the particles downstream and induces the particles trapped in desired outlets. Fluid particle interaction (FPI) with a time-dependent solver in COMSOL Multiphysics was used to carry out the numerical study. Two particle sizes of 5 µm and 20 µm were applied, the inlet velocity of 0.52 m/s with an inflow angle of 50° was used throughout the study and it suggested that: the microchannel length of 3 mm with corrugated dragonfly wing structure had the maximum particle capture rate of 20 µm at the mainstream outlet. 80% capture rate for the microchannel length of 3 mm with corrugated dragonfly wing structure and 98% capture rate for the microchannel length of 2 mm with cilia wall structure were observed. Numerical simulation results showed that the cilia walled microchip is superior to the corrugated wing structure as the mainstream outlet can conduct most of the 20 µm particles. At the same time, the secondary outlet can laterally capture most of the 5 µm particles. This biomimetic microchip design is expected to be implemented using the PDMS MEMS process in the future.
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Wang, Jin Rong, Xin Guang Lv, Shi Qing Huang, Yu Mei Wu, and Qiong Chen. "Theoretical Analysis of Equivalent Elastic Modulus of Corrugated Paperboard." Applied Mechanics and Materials 200 (October 2012): 243–48. http://dx.doi.org/10.4028/www.scientific.net/amm.200.243.
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A new mathematical method is developed for the calculation of equivalent elastic modulus of UV-type corrugated paperboard. The model is assumed to be composite sandwich structure and to endure the out-of-plane uniform pressure. Force method is used for the derivation of the formula. The influence of the corrugated medium structure on the flat compression strength of corrugated paperboard is investigated as well. The equivalent elastic moduluses of two different sizes of three-layer UV corrugated paperboard are calculated according to the derived formula. The relationship between the thickness and the shape parameters with the flat compressive strength is discussed. The introduction of shape coefficient into this formula can help to optimize the corrugated sandwich structure and its cushioning pads.
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Zhang, Qing, and Rongrong Xue. "Aerodynamic Exploration of Corrugated Airfoil Based on NACA0030 for Inflatable Wing Structure." Aerospace 10, no. 2 (2023): 174. http://dx.doi.org/10.3390/aerospace10020174.
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The flow structures and surface pressure distributions on corrugated airfoils significantly differed from those on a conventional, smooth airfoil. An unsteady, two-dimensional computational simulation was carried out to investigate the flow behavior and associated aerodynamic performance of a group of corrugated airfoils with different levels of waviness at angles of attack from 0° to 20° with an interval of 2° at a low Reynolds number regime (Re = 1.2 × 105) and were quantitatively compared with those of its smooth counterpart. Time-averaged aerodynamic coefficients demonstrated that the corrugated airfoils have a lower lift and higher drag because of trapped vortices in the corrugations. The pressure drag of the corrugated airfoils was greater than that of the smooth airfoil. In contrast, the viscous drag of the corrugated airfoils was smaller than that of the smooth airfoil because the recirculation generated in the corrugation could reduce the viscous drag. The averaged velocity gradient in the boundary layer showed that the thickness of the boundary layer increased significantly for the corrugated airfoils because of recirculating flow caused by the small-standing vortices trapped in the valley of corrugations. The smoother the corrugated surface, the closer the aerodynamic characteristics are to those of the smooth airfoil.
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Merazig, Hocine, Fatima Setifi, Zouaoui Setifi, Peter H. Bird, Georges Dénès, and Korzior Tam. "K3Sn5Cl3F10with a corrugated layered structure." Acta Crystallographica Section E Structure Reports Online 61, no. 6 (2005): i120—i122. http://dx.doi.org/10.1107/s1600536805016351.
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Ren, Siqi, Jing Zhao, Zhiqin Kang, Guoying Wang, and Dong Yang. "Suitability Analysis of the Deformation Behavior of Metal Corrugated Casing in High-Temperature Wellbore." Energies 16, no. 16 (2023): 5966. http://dx.doi.org/10.3390/en16165966.
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The stability of the casing is a crucial prerequisite for implementing the in situ high-temperature steam injection method in oil shale reservoirs. In order to address the issues of substantial expansion, concentrated thermal stresses, and susceptibility to damage observed in traditional straight casings under high temperatures, this paper proposes the utilization of a corrugated casing structure. In this regard, to investigate the impact of the shape and structure of the wellbore casing on its mechanical properties, identical corrugated and straight casings were selected and studied. Uniaxial compression and tensile tests were conducted on the casings, along with coordination deformation experiments between the casing and cement sheath under varying temperatures. Numerical simulations were employed to obtain the deformation characteristics of the corrugated and straight casings under axial compression and tension loads, as well as the stress distribution on the outer casing wall. The results showed that when subjected to the same amount of deformation under axial loading, the corrugated casing experienced lower compressive and tensile loads compared to the straight casing. Moreover, under the sole constraint of cement sheath, increasing the temperature led to lower vertical strains (perpendicular to the ground) at all measuring points of the corrugated casing as compared to the corresponding strains in the straight casing. Numerical simulations revealed that, under the same temperatures, the deformation at the interface between the corrugated casing and the cement sheath was smaller, while the vertical stress at the interface of the corrugated casing was also lower than the straight casing. Overall, the corrugated casing, with its corrugated structure that enabled micro-deformation, effectively mitigated the axial deformation of the casing caused by thermal expansion. Consequently, the corrugated casing reduced the extrusion of wellbore casing on the cement sheath, thereby preserving the integrity and stability of the wellbore cementing structure.
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Li, Shu Qin, and Shui Wan. "Application of the Pre-Stressed Concrete Box-Girder with Corrugated Steel Webs in Bridge Engineering in China." Advanced Materials Research 779-780 (September 2013): 550–55. http://dx.doi.org/10.4028/www.scientific.net/amr.779-780.550.
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The pre-stressed composite box-girder with corrugated steel webs is a new kind structure, which includes corrugated steel webs, external pre-stressed cables and shear connectors that connect the corrugated steel webs and the concrete flange slab. In recent years more and more attention has been given to this kind structure and important achievement has been got in bridge engineering in China. In this paper three pre-stressed composite box-girder bridges with corrugated steel webs in China are introduced. Design experiences about the bridges are summarized, and their construction are discussed.
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Xia, Rong Hou, Yan Feng Guo, and Wei Zhang. "Study on the Failure Mode of Corrugated Paperboard during Transport and Distribution." Applied Mechanics and Materials 200 (October 2012): 118–21. http://dx.doi.org/10.4028/www.scientific.net/amm.200.118.
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Corrugated paperboard is a kind of inexpensive and environmental-friendly packaging material and may be made into cushioning package pads to protect products from damaging during transport and distribution. By virtue of the static compression tests and impose four kinds of different compression speed on two kinds corrugated paperboard pads, This paper obtains the failure modes and the stress and strain curve. The results show that the failure of the corrugated board exhibit four stages, the linear elastic stage, the yield stage, plastic deformation and densification stage. The damage of corrugated structure pads occurs on yield and plastic deformation stage and structure damage mostly is shear crimpling on core layer. The damage of double layer corrugated paperboard is separated layer, first the bottom layer be damaged, then the top layer, until the corrugated paperboard is damaged wholly. In addition, we also find that the static compression speed has not significantly influence on the corrugated paperboard.
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Ao, Deng, Guoxi Hu, and Qiang Xu. "Analysis and Assessment of Prestressed Reactive Powder Concrete Box-girder Bridge with Corrugated Steel Webs." Journal of Physics: Conference Series 2463, no. 1 (2023): 012016. http://dx.doi.org/10.1088/1742-6596/2463/1/012016.
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Abstract Prestressed concrete box girder bridge with corrugated steel webs is a new type of bridge which uses corrugated steel webs to replace the traditional concrete webs. Compared with the traditional box girder bridge, it has certain advantages and has been widely used in bridge engineering. Combined with the characteristics of prestressed concrete box girder bridge with corrugated steel webs and reactive powder concrete theory, this paper puts forward the concept of new prestressed corrugated steel webs reactive powder concrete box girder bridge. By improving the material properties, structural design and construction methods of prestressed concrete composite structure with corrugated steel webs, its bearing capacity can be improved, so as to improve its construction efficiency and economic benefits. The research shows that the prestressed reactive powder concrete box girder with corrugated steel webs has the advantages of light structure and convenient construction, and has superior mechanical properties and obvious economic benefits when it bears the equivalent external load of prestressed corrugated steel web concrete composite girder.
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Elzayady, Nagwa, and Eltahry Elghandour. "Compression Capacity of Corrugated Core Hybrid Composite Sandwich Structure." Key Engineering Materials 821 (September 2019): 47–53. http://dx.doi.org/10.4028/www.scientific.net/kem.821.47.
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Improvement of mechanical properties of light-weight corrugated core sandwich structures is a big demand in aerospace applications. Among these applications, space vehicles which encounter pressure loads and severe aerodynamic heating during ascent and reentry. The open-cell corrugated core is useful for active cooling of the sandwich structures. In this work, hybrid composite structural members with fiberglass corrugated core and carbon fiber skin facings were manufactured using vacuum bag technique. Different specimen configurations with rectangular cross-section area have been subjected to the load in the longitudinal direction of the corrugation and examined by edgewise compression test. The proposed testing has been applied to take advantage of the highest inertia of the specimen in such orientation. The test provides a basis for estimating the load carrying capacity when these structure members are used as individual webs in the aircraft interiors. Also as the core sheet is turned by 90° to the regular load direction, this structure member is similar to the so-called honeycomb when ordered in parallel rows and hence it is appropriate for floor sandwiching. In contrary to a honeycomb, this core consists of fiberglass laminate and therefore higher compressive resistance is associated. The results exhibit high values of both stiffness and ultimate compression force in the corrugation direction. For the rectangular area and the open corrugated contour, specific properties relative to the weight are extremely high. Also, the results and graphs indicate that there must be at least three corrugated ligaments with a trapezoidal cross section of 0.5” height and 63o per cell to grantee stability under load and high absorbed energy in the non-linear stage as well.
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Miralimov, Mirzakhid, Abdurakhman Ishankhodjaev, Khudaybergan Almenov, and Eldior Muminov. "Influencing of land transport load on structure of backfill arched Road Bridge." E3S Web of Conferences 264 (2021): 02013. http://dx.doi.org/10.1051/e3sconf/202126402013.
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In this paper, for the objective assessment of stress-strain state parameters of backfill arched road bridge, the research work is carried out, where the model of reinforced concrete, corrugated structure is exposed to modern land transport load. In the course of numerical studies, stresses and deformations in sections of structure and the soil are determined. These studies allow revealing the mechanism of operation of corrugated reinforced concrete structures in the body of an embankment of highways when passing modern transport loads along with them.
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Harkusha, Mykola. "Recommendations for restoration of culvert using metal corrugated structures." Dorogi i mosti 2024, no. 30 (2024): 321–37. http://dx.doi.org/10.36100/dorogimosti2024.30.321.
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Introduction. The reliability and durability of culverts are affected by static and dynamic loads from vehicles and temperature and climatic influences, the destructive force of water flow, abrasive destruction, corrosion of the material, shortcomings in the choice of structures and unsatisfactory design, all of which cause the premature collapse of the structure. Today, culverts made of metal corrugated structures (hereinafter referred to as metal corrugated structures) are widely used. The well-known advantages that justify the choice of such a solution are mainly a short term and a relatively low cost of construction, construction provided that the appropriate technological regime is observed does not cause any particular problems. Therefore, there is a need to develop a recommendation for the restoration of culverts using metal corrugated structures. Problems. It was established that there is a need to restore culverts without stopping the movement of vehicles. Goal. It consists in offering approaches for the restoration of culverts using metal corrugated structures.
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Lu, Zhan, Jiayan Zheng, Pengbo Lan, Dingjia Chen, and Lijuan Yang. "Research on Local Buckling of Square-arched Corrugated Steel Pipe under Axial Compression." Advances in Engineering Technology Research 12, no. 1 (2025): 1393. https://doi.org/10.56028/aetr.12.1.1393.2024.
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Corrugated steel pipe is widely used in underground structures because of its advantages like higher structural strength, facilitate easier transportation and installation, boast extended service life, possess robust bending resistance, and demonstrate the capability to accommodate engineering issues like foundation deformation and uneven settlement. However, such structures are susceptible to buckling during service, but buckling on square-arched corrugated steel pipe is urgently lacking.This paper focuses on the buckling problem of square-arched corrugated steel pipe under uniform axial pressure, summarizes the calculation method for buckling ultimate load of corrugated steel pipe in traditional design specifications, and calculate the buckling mode and ultimate buckling load of two types of corrugated steel pipes with different cross-sections using finite element method, verification of the safety and reliability of the buckling limit load formula calculation methods in different design codes. The buckling modes, buckling limit load, Load and Pressure Factor (LPF), buckling stress and buckling displacement of the two types of corrugated steel pipes calculated by the arc length method uesd to analyze the buckling response of the structure with different sections. Analyze the buckling resistance of square-arched corrugated steel pipe, and provide the basis of section comparison for related projects. The results demonstrate that 1. the calculation method of buckling limit load of corrugated steel pipe in the AASHTO LRFD Bridge Design Specifications is safer and more realistic than others, 2. The increase of corrugated steel pipe wall thickness can effectively improve its resistance to buckling capacity, 3. Round corrugated steel pipe is recommended when the pipe wall thickness is thin, and square-arched corrugated steel pipe is recommended when the pipe wall thickness is thicker.
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Kovalchuk, Vitalii, Mykola Sysyn, Yuriy Hnativ, et al. "Restoration of the Bearing Capacity of Damaged Transport Constructions Made of Corrugated Metal Structures." Baltic Journal of Road and Bridge Engineering 16, no. 2 (2021): 90–109. http://dx.doi.org/10.7250/bjrbe.2021-16.529.
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The paper deals with damages of transport constructions made of corrugated metal structures in the body of a railway track or a road during their operation. A constructive variant to restore the bearing capacity of structures was developed, which consists of installing an annular stiffening rib into the concave part of the corrugated metal profile. The main advantage of this method compared to the double corrugating method is the possibility of performing the reinforcement works during structure operation without interrupting the movement of transport vesicles. The study has proved that the reinforcement method significantly increases the carrying capacity of corrugated metal structures. A numerical finite element model was developed to determine the stress-strain state of structures made of corrugated metal structures reinforced with round stiffening ribs. The soil pressure on the corrugated shell in the model is taken into account with the application of radial and axial forces on the outer surface of the shell. It was determined that the most appropriate location of the ribs is in the centre of the building, where the reinforcement area corresponds to the width of the road or railway line. The advantage of this approach is the ability to more efficiently distribute the reinforcement material by selecting the ribs in the most loaded sections of corrugated metal structures.
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Nirala, Nitish, and Nabin Kumar. "Band Gap Mechanism for Armchair Single Walled Carbon Nanotubes and Metal Semiconductor Transition for Symmetry Breaking." Bulletin of Pure and Applied Sciences – Physics 42, no. 2 (2023): 75–79. http://dx.doi.org/10.48165/bpas.2023.42d.2.2.
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We have studied structures of single walled carbon nanotubes and metal semiconductor transition for the symmetric breaking. It was found that band gap existed for metallic armchair single walled carbon nanotubes. Calculations were made to analyse the meta-stability of the corrugated structures of armchair single walled carbon nanotubes. The corrugated single walled carbon nanotube structures are always lower in energy than the non corrugated nanotubes. The curvature effect was that the corrugated structure breaks the local symmetry between different carbon atoms. A true gap is created which does not vanish even when an external magnetic field is swept. The corrugation length and band gap gaps are decaying functions of the nanotubes radius and approached zero for carbon nanotube such as graphene. This was also true for zigzag and chiral single wall carbon nanotubes. The obtained results were found in good agreement with previously obtained results.
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Wang, C., H. H. Khodaparast, M. I. Friswell, and A. D. Shaw. "Compliant structures based on stiffness asymmetry." Aeronautical Journal 122, no. 1249 (2018): 442–61. http://dx.doi.org/10.1017/aer.2017.144.
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ABSTRACTOne of the key problems in the development of morphing aircraft is the morphing structure, which should be able to carry loads and change its geometry simultaneously. This paper investigates a compliant structure, which has the potential to change the dihedral angle of morphing wing-tip devices. The compliant structure is able to induce deformation by unsymmetrical stiffness allocation and carry aerodynamic loads if the total stiffness of the structure is sufficient.The concept has been introduced by building a simplified model of the structure and deriving the analytical equations. However, a properly designed stiffness asymmetry, which is optimised, can help to achieve the same deformation with a reduced actuation force.In this paper, round corrugated panels are used in the compliant structure and the stiffness asymmetry is introduced by changing the geometry of the corrugation panel. A new equivalent model of the round corrugated panel is developed, which takes the axial and bending coupling of the corrugated panel into account. The stiffness matrix of the corrugated panel is obtained using the equivalent model, and then the deflections of the compliant structure can be calculated. The results are compared to those from detailed finite element models built in the commercial software Abaqus. Samples with different geometries were manufactured for experimental tests.After verifying the equivalent model, optimisation is performed to find the optimum geometries of the compliant structures. The actuation force of a single compliant structure is first optimised, and then the optimisation is performed for a compliant structure consisting of multiple units. A case study is used to show the performance improvement obtained.
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Zorenko, Oksana, Yaroslav Zorenko, Iryna Kupalkina-Luhova, Vasyl Skyba, and Rozaliya Khokhlova. "Influence of the surface characteristics of corrugated cardboard on the quality of inkjet printing." Eastern-European Journal of Enterprise Technologies 6, no. 1 (114) (2021): 47–55. http://dx.doi.org/10.15587/1729-4061.2021.244617.
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This paper investigates the quality of inkjet printing on corrugated cardboard with various characteristics such as the presence of surface coating, the type of cardboard structure, the corrugated layer profile, and the corrugated cardboard height. The color characteristics of the corrugated board surface of studied samples were analyzed in the CIE Lab system; the value of the discrepancy in the shade of white was established when compared with the reference values of the ISO 12647 standard. During the study, the main criteria for assessing the quality of color reproduction of inkjet imprints were analyzed: an indicator of the general contrast level (K), the value of color differences for the basic tone shades (ΔE), and the volume of the body color coverage (ΔE2). It was found that when printing on various types of corrugated cardboard, there is a general decrease in the overall contrast value. The actual level of color differences is ΔE=10...45 and exceeds the permissible standards for the color reproduction quality. This adversely affects the reproduction of different color tones in the printed image. In general, the quality of color reproduction differs for the test samples of corrugated cardboard in terms of the magnitude of the spread in the values of color distortions on the tone shades. The influence of the main characteristics of the investigated samples of corrugated cardboard on the quality indicators of inkjet printing has been analyzed. In particular, a significant influence of the index of color characteristics of the surface of corrugated cardboard L* and the type of corrugated board structure on the quality of color reproduction has been established. The study results reported here could make it possible to reasonably approach the selection of the corrugated board structure that is optimal in composition, increase the productivity of the technological process for manufacturing containers, and stabilize the quality of printing on corrugated cardboard
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Yuan, Wei, Wen Cai Xu, Gai Mei Zhang, and Li Hua Xie. "The Finite Element Study of the Compressive Strength of Typical Waveform Corrugated Box." Applied Mechanics and Materials 262 (December 2012): 390–94. http://dx.doi.org/10.4028/www.scientific.net/amm.262.390.
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The finite element model of a 0201 V-shaped, U-shaped, and UV-shaped single corrugated board corrugated boxes are established. The stress distribution and strain of the three types of waveform corrugated box to withstand the pressure of the top surface stacking are calculated. Three kinds of corrugated board compression are analyzed. Analysis of the structure shows that the V-shaped corrugated board has good rigidity, U-type corrugated box has good cushioning properties, and the range during which the UV type is a better choice. This is consistent with the experimental results, prove the validity of the finite element analysis, and provide data basis for optimization design of the shape of the corrugated board corrugated waveform.
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Zhang, Li, Junan Wu, Changfa Chen, et al. "Mechanical Behavior of Hollow Corrugated Sandwich Cylinders Under Inner Pressure Loading." Applied Sciences 14, no. 24 (2024): 12011. https://doi.org/10.3390/app142412011.
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Taking pressure-bearing equipment as a prototype, the mechanical behavior of hollow corrugated sandwich cylinders under inner pressure loading was investigated. Considering the hollow cylindrical shell with finite length, the elastic closed-form solutions of hollow corrugated sandwich cylinders under inner pressure loading were presented. The optimization for minimum weight was performed. The stress distribution characteristics of the structures with different topological parameters were discussed. It can be found that an inflection point of the structure loading efficiency exists during an increase in the pressure, providing that under lower inner pressure loading, the loading efficiency of hollow corrugated sandwich structures is not invariably superior to homogeneous structures, yet while subjected to higher inner pressures, the sandwich structures exhibit a significant advantage in load-bearing efficiency.
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Zhu, Shenglin, Jinfeng Wang, and Jing Xie. "Numerical Investigation of the Heat Transfer Characteristics of R290 Flow Boiling in Corrugated Tubes with Different Internal Corrugated Structures." Mathematics 9, no. 22 (2021): 2969. http://dx.doi.org/10.3390/math9222969.
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The heat transfer and pressure drop characteristics of R290 flow boiling in a corrugated tube were investigated through computational fluid dynamics (CFD) in this study. We established a model of flow boiling in a corrugated tube with different corrugated structures (rectangular and circular corrugations) and validated the model using the Liu–Winterton and Xu–Fang empirical equations. The heat transfer coefficient (HTC) and pressure drop were obtained at a mass flow rate of 0.04–0.2 kg/s and a water inlet temperature of 310–330 K. The results show that the HTC and the drop in the pressure of the corrugated tubes both obviously increased compared with a smooth tube as the mass flow rate increased. The HTC decreased for the three tubes as the water inlet temperature increased, while the drop in pressure slightly increased for the three tubes. Moreover, the corrugated structure was found to significantly enhance the heat transfer; the heat transfer enhancement factor (E1) of the corrugated tube with the rectangular corrugations and the corrugated tube with the circular corrugations was 2.01–2.36 and 1.67–1.98, respectively. The efficiency index (I) for both the rectangular corrugated pipe and the circular corrugated pipe was greater than 1 (1.05–1.24 and 1.13–1.29, respectively). The application of corrugated tubes with round and rectangular corrugations can reduce the heat transfer area required for the exchange of heat and, thus, reduce the cost.
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Han, Jian Huang, Yang Liu, Zun Ce Wang, and Sen Li. "Numerical Simulation and Structure Optimization on the Corrugated Tubes of a Double Pipe Heat Exchanger." Applied Mechanics and Materials 385-386 (August 2013): 65–68. http://dx.doi.org/10.4028/www.scientific.net/amm.385-386.65.
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The combination of numerical simulation and orthogonal experimental design method can reduce the test number. Structural parametric modeling research on corrugated tube of heat exchangers in our work to establish the fluid flow and heat transfer numerical simulation model. A scheme of orthogonal test of a corrugated tube, which includes 4 factors and 3 levels and has taken heat exchange quantity, resistance of the internal tube and annular gap as evaluation indexes, was designed. A method combining with the difference and the variance analysis was taken to analysis the result of orthogonal test, and the effect of different structure parameter on corrugated tube was achieved. Finally the optimal structure parameter of the corrugated tube was obtained by a comprehensive balance method, and those methods above-mentioned provide a reference for the design or promotion of the corrugated tube of tube heat exchanger.
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Zhou, Hao, Rui Guo, and Rongzhong Liu. "Protection properties of stuffed corrugated sandwich structures under hypervelocity impact: Numerical simulation." Journal of Sandwich Structures & Materials 21, no. 2 (2017): 532–51. http://dx.doi.org/10.1177/1099636217697493.
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The stuffed corrugated sandwich structure was proposed for the application in the protection of the spacecraft against orbital debris. In order to investigate the protection properties of the stuffed corrugated sandwich structure under hypervelocity impact, numerical simulations were carried out to analyze the impact characteristics. The hypervelocity impact process was presented and the properties such as shock waves propagation, energy absorption, and expansion of the debris cloud were discussed; corresponding properties of mass equal Whipple structure under impact were analyzed for comparison. The results illustrate the protection mechanism of the stuffed corrugated sandwich subject to hypervelocity impact and show that it has superior protection performance to monolithic plate, which prove that the stuffed corrugated sandwich structure has potentially broad application prospect in the field of spacecraft protection against the orbital debris. The research can provide reference for the design of protection shield of the spacecraft.
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Al-Jothery, Husam, and Thar Albarody. "Study on Mechanical Behavior of Double Corrugation Surface Structure of Thermoset Composite." Journal of Engineering and Sustainable Development 29, no. 3 (2025): 282–88. https://doi.org/10.31272/jeasd.2793.
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Transforming the thin-wall structure from 2D to 3D to enhance the flexibility and strength of materials is an interesting research area regarding fabricating techniques and engineering properties. This study investigated the double corrugation surface structure for fiberglass-reinforced epoxy thermoset composite to improve the mechanical properties of designed composite materials. Three groups of corrugated samples (2, 4, and 6 layers) were fabricated for testing. The resulting corrugated thermoset composites were tested through tensile and compressive tests. The results illustrated that the tensile strength of a flat sample was 14.28% and 27.74% higher than the one of the double corrugated surface samples on the x-axis and y-axis directions, respectively. Then, the design showed a tremendous increase in the elongation of more than 13 times compared to the flat sample at a relatively slight expense of strength. Besides, the result also showed that the material's compressive strength improved drastically when the number of layers increased from two to six. It was presented that the increase in the number of double corrugated surface structure layers leads to a rise in energy absorption. Therefore, the highest energy absorption was 241.62 J of 6 layers-double corrugated surface sample.
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Oksana, Zorenko, Zorenko Yaroslav, Kupalkina-Luhova Iryna, Skyba Vasyl, and Khokhlova Rozaliya. "Influence of the surface characteristics of corrugated cardboard on the quality of inkjet printing." Eastern-European Journal of Enterprise Technologies 6, no. 1 (114) (2021): 47–55. https://doi.org/10.15587/1729-4061.2021.244617.
Full textAbstract:
This paper investigates the quality of inkjet printing on corrugated cardboard with various characteristics such as the presence of surface coating, the type of cardboard structure, the corrugated layer profile, and the corrugated cardboard height. The color characteristics of the corrugated board surface of studied samples were analyzed in the CIE Lab system; the value of the discrepancy in the shade of white was established when compared with the reference values of the ISO 12647 standard. During the study, the main criteria for assessing the quality of color reproduction of inkjet imprints were analyzed: an indicator of the general contrast level (K), the value of color differences for the basic tone shades (ΔE), and the volume of the body color coverage (ΔE<sup>2</sup>). It was found that when printing on various types of corrugated cardboard, there is a general decrease in the overall contrast value. The actual level of color differences is ΔE=10...45 and exceeds the permissible standards for the color reproduction quality. This adversely affects the reproduction of different color tones in the printed image. In general, the quality of color reproduction differs for the test samples of corrugated cardboard in terms of the magnitude of the spread in the values of color distortions on the tone shades. The influence of the main characteristics of the investigated samples of corrugated cardboard on the quality indicators of inkjet printing has been analyzed. In particular, a significant influence of the index of color characteristics of the surface of corrugated cardboard L* and the type of corrugated board structure on the quality of color reproduction has been established. The study results reported here could make it possible to reasonably approach the selection of the corrugated board structure that is optimal in composition, increase the productivity of the technological process for manufacturing containers, and stabilize the quality of printing on corrugated cardboard
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Guo, Caixia, Zuozhen Wang, Hongbing Zhao, Zhiqiang Zhou, and Miao Wang. "Numerical Simulation of Corrugated Steel Concrete Prefabricated Support Structure for Underground Engineering." Sustainability 15, no. 19 (2023): 14495. http://dx.doi.org/10.3390/su151914495.
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The spray anchor system is commonly used for primary support in underground projects due to its advantages such as fast closure of excavation surfaces, tight connection with the surrounding rock, and high early strength. However, this system has several drawbacks, such as severe pollution, poor working conditions, long construction periods, and high labor costs. In response to the concepts of green construction and prefabrication, this study proposes an innovative composite structure consisting of corrugated steel plates and concrete, namely, corrugated steel–concrete (CSC), which is a prefabricated support structure for underground engineering. The proposed system involves on-site corrugated steel plates and concrete, and the concrete is poured into the corrugated steel plates without using shotcrete. This approach mitigates pollution and improves working conditions. After the introduction to the novel structural system, elaborate Abaqus numerical models are developed to investigate the mechanical performance considering full elastoplastic response until failure. The steel–concrete interfacial connections, as a major factor in composite structures, are carefully studied and discussed based on the delicate interfacial contact model. The deformations, stress distributions, and failure types are analyzed. A parametric analysis is also conducted to expand the efficient range. Theoretical analysis is further carried out, and design expressions are proposed, which are verified to be suitable for design considerations.
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Ren, Da Long, and Shui Wan. "Design and Application of PC Composite Box-Girder Bridge with Corrugated Steel Webs." Applied Mechanics and Materials 71-78 (July 2011): 1168–72. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.1168.
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The structure characteristic of prestressed concrete(PC) composite box-girder with corrugated steel webs is introduced, and the advantage is shown compared to PC girder bridge. Design of PC composite girder bridge with corrugated steel webs is introduced, contents including corrugated steel webs, shear connector, etc. The domestic application and development of PC composite box-girder bridge with corrugated steel web is reviewed, and part of the typical bridges combined with corrugated steel web PC box-girder are listed. On behalf of PC composite box-girder bridge with corrugated steel web, Shandong Juancheng Yellow River Bridge is introduced in detail. At last, the future of this type of bridge is prospected.
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Moosavian, Seyed Farhan, Daryoosh Borzuei, Meisam Farajollahi, and Mehrad Goharzay. "Influence of Corrugation Size and Location on Sensitivity Enhancement for MEMS-Based Pressure Sensor." Journal of Mechanical Engineering 19, no. 1 (2022): 1–20. http://dx.doi.org/10.24191/jmeche.v19i1.19683.
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In this paper, a MEMS capacitive diaphragm-based pressure sensor is investigated. The main focus of this work is to analyze the effect of the geometry and configuration on the sensitivity of a sensor as a crucial parameter in sensor design. Finite element modelling using ABAQUS software is conducted to simulate the behaviour of the diaphragm with different geometries under the same condition. Three popular geometries including square, rectangular and circular shapes with similar areas are investigated and sensitivities of 0.3, 0.24, and 0.22 µm/MPa were obtained for circular, square, and rectangular shapes respectively. Corrugated structure is added to circular diaphragm and deflection and stress analysis are provided for various positions and wave radius of the corrugated region and the best configuration based on sensitivity analysis is proposed. Simulation proved the 17.62% improvement in sensitivity by using a corrugated structure in a circular diaphragm with a small wave radius at the circumference of the circle. An increasing number of corrugated wave regions was also simulated but could not enhance the sensitivity in comparison with a one-wave corrugated structure.
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Wang, Dong Mei. "Compressive Constitutive Relation for Multi-Layer Corrugated Boards." Applied Mechanics and Materials 80-81 (July 2011): 365–69. http://dx.doi.org/10.4028/www.scientific.net/amm.80-81.365.
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The investigation into the cushioning properties of multi-layer corrugated boards is a hotspot issue in the packaging field. People one after another investigate into the compressive properties based on experiments. As far as authors' knowledge is concerned, no theoretical research on compressive constitutive relation for multi-layer corrugated boards has ever been reported in literature. Therefore, we investigated into the compressive properties of multi-layer corrugated boards and analyzed their compressive breakage mechanism. The compression curve of multi-layer corrugated boards presents the three sections of linear elasticity, sub-buckling going with local collapse and densification. We constructed the compressive constitutive equation by a subsection function. The equation is standardized by the solid modulus Es of corrugated sandwich materials. Focusing on the structure characteristics, it can express the compression resistance and cushioning properties in the same curve for different basis materials. Comparison between the theory and experiments shows that a good consistency is achieved between theoretical and experimental stress-strain curves. By means of the compressive constitutive equation, the compression resistance and cushioning properties can be evaluated without more experiments, which facilitates the optimization of the structure of the corrugated sandwich structure and the optimized design of the cushioning package.
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Zhang, De Sheng, and Yuan Ying Li. "The Research on the Dynamic Response of Arched Corrugated Metal Roof Structure with Ring Hoops." Advanced Materials Research 163-167 (December 2010): 539–43. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.539.
Full textAbstract:
The paper is based on the relatively large-span, thin thickness of the arched corrugated metal roof (ACMR) and the fact that the structure would suffer asymmetry swinging within the vertical plane and structure vibration under the effect of the wind and earthquake. A structure strengthening method called the arched corrugated metal roof with ring hoops (ACMRH) is adopted. With SAP2000, a finite element model is established, with type of w666-18m span, rise-span ratio 0.25, 1mm of thickness and condition of fixed support as its research object. The dynamic time history response is analyzed and compared with documents [1]. Result is shown as below. With the same earthquake wave on the structure added, the vertical and horizontal deflection displacement of the most unfavorable point of the arched corrugated metal roof with ring hoops is always less than that of the structure without ring hoops. The maximal decrement is about 28%. This result indicates the arched corrugated metal roof with ring hoops has a better effect on controlling the displacement deformation.
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Zulaikah, Siti, Farid Triawan, Bentang Arief Budiman, Yusuf Romadhon, and Doddy Kamaludin. "Study on the Mechanical Properties and Behavior of Corrugated Cardboard under Tensile and Compression Loads." Materials Science Forum 1092 (June 6, 2023): 45–54. http://dx.doi.org/10.4028/p-ztf25l.
Full textAbstract:
Corrugated cardboard has multilayer construction that produces rigid, durable, and worthy material for shipping heavy goods or hazmat. The numerous advantages offered have made it a worldwide staple in the warehousing, packaging, and transportation industries. Unfortunately, studies on corrugated cardboard’s mechanical properties and behavior are still limited due to the complexity of structures and testing procedures. The present work investigates corrugated cardboard’s mechanical properties and behavior by conducting uniaxial tensile and compressive tests. Three different testing directions in x, y, and z-axes were applied on AA-flute double-wall (AA/F-DW) or virgin pulp paper Bi-Wall corrugated cardboard. The stress-strain curve is measured and evaluated to obtain the mechanical properties, i.e., yield strength and ultimate strength. The result shows that corrugated cardboard has linear and non-linear mechanical behavior or elastic-plastic regions under those different directions. Moreover, the flute on the corrugated cardboard gives jaggedness to the stress-strain curve and makes the material more elastic, more durable, and has better absorbing energy capacity. This finding could be used to design any products, such as a packaging frame made of corrugated cardboard, where the strength of the structure could be predicted based on the mechanical properties and behavior.