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Journal articles on the topic 'Composite structure model'

Author: Grafiati
Published: 3 June 2025
Last updated: 1 August 2025

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1

Sertaç, Tuhta, Günday Furkan, and Aydin Hakan. "Dynamic Analysis of Model Steel Structures Retrofitted with GFRP Composites under Microtremor Vibration." International Journal of Trend in Scientific Research and Development 3, no. 2 (2019): 729–33. https://doi.org/10.31142/ijtsrd21455.

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There are many varieties of the structural and architectural structures strengthened with different FRP composites are gaining popularity, and there is a growing need to understand and compare the behavior of these structures before after GFRP composite strengthening. In this study, model steel structure was tested on the bench scale earthquake simulator The Quanser Shake Table using ambient vibration, to determine the dynamic response. After this, slabs of the model steel structure was strengthened with GFRP composite, and tested on the bench scale earthquake simulator The Quanser Shake Table
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Sertaç, Tuhta. "OMA of GFRP Retrofitted Model Concrete Structure Using Ambient Vibration." International Journal of Trend in Scientific Research and Development 3, no. 1 (2018): 360–70. https://doi.org/10.31142/ijtsrd18979.

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Nowadays, there are a great number of various structures that have been retrofitted by using different FRP Composites AFRP, BFRP, CFRP, GFRP, etc. . Due to this, more researches need to be conducted to know more the dynamic characteristics of these structures, not only that but also a comparison among them before and after the retrofitting is needed. In this study, a model concrete structure is tested using ambient vibration data, in order to get the dynamic behaviors. Slab of the model concrete structure are then retrofitted by using GFRP composite, and then tested by using the ambient vibrat
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Tuhta, Sertaç, Obaidullah Abrar, and Furkan Günday. "Experimental Study on Behavior of Bench-Scale Steel Structure Retrofitted with CFRP Composites under Ambient Vibration." European Journal of Engineering Research and Science 4, no. 5 (2019): 109–14. http://dx.doi.org/10.24018/ejers.2019.4.5.1335.

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Usage of FRP composites for the retrofitting purpose of the structures against the harmful effect of dynamic loads are gaining popularity, it is used in a wide variety of disciplines including civil engineering. Thus, there is a great need to study the behavior of FRP composites for strengthening purposes of structures using empirical methods. In this study, a bench-scale steel structure model was strengthened with CFRP composite and tested using operational modal analysis. To conduct operational modal analysis a bench-scale earthquake simulator and ambient vibration emulator were used. Same s
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Tuhta, Sertaç, Obaidullah Abrar, and Furkan Günday. "Experimental Study on Behavior of Bench-Scale Steel Structure Retrofitted with CFRP Composites under Ambient Vibration." European Journal of Engineering and Technology Research 4, no. 5 (2019): 109–14. http://dx.doi.org/10.24018/ejeng.2019.4.5.1335.

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Usage of FRP composites for the retrofitting purpose of the structures against the harmful effect of dynamic loads are gaining popularity, it is used in a wide variety of disciplines including civil engineering. Thus, there is a great need to study the behavior of FRP composites for strengthening purposes of structures using empirical methods. In this study, a bench-scale steel structure model was strengthened with CFRP composite and tested using operational modal analysis. To conduct operational modal analysis a bench-scale earthquake simulator and ambient vibration emulator were used. Same s
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Ding, Zude, Mingrong Liao, Nanrun Xiao, and Xiaoqin Li. "Numerical Analysis of the Seismic Response of Tunnel Composite Lining Structures across an Active Fault." Advances in Materials Science and Engineering 2021 (December 3, 2021): 1–12. http://dx.doi.org/10.1155/2021/1518763.

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The mechanical properties of high-toughness engineering cementitious composites (ECC) were tested, and a damage constitutive model of the materials was constructed. A new aseismic composite structure was then built on the basis of this model by combining aseismic joints, damping layers, traditional reinforced concrete linings, and ECC linings. A series of 3D dynamic-response numerical models considering the composite structure-surrounding rock-fault interaction were established to explore the seismic response characteristics and aseismic performance of the composite structures. The adaptabilit
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Nguyen, Anh Vu, Karine Charlet, Belhassen Chedli Bouzgarrou, Ky Nam Pham, Trong Dai Vu, and Alexis Béakou. "Hybrid Effect on Hybrid Composite Reinforced Carbon Fibers and Flax Fibers." Key Engineering Materials 801 (May 2019): 101–6. http://dx.doi.org/10.4028/www.scientific.net/kem.801.101.

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In this paper, hybrid composite made of carbon woven fibers and flax woven fibers is studied. This hybrid composite structure takes advantages of high resistance, high stiffness of carbon fibers and high damping and low density of flax fibers. Different structures of flax woven composites, carbon woven composites and hybrid composites were fabricated and tested experimentally. With aim of predicting the properties of the hybrid composite, a homogenization model of the composite is established. The homogenization model is based on the rule-of-mixture and iso-strain assumption. The results of th
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Arsalan, Hussain Khan, and Misbah Danish Mr. "FINITE ELEMENT ANALYSIS OF LAMINATED SANDWICH STRUCTURE." International Journal of Advances in Engineering & Scientific Research 5, no. 3 (2018): 14–33. https://doi.org/10.5281/zenodo.10780792.

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<strong>ABSTRACT</strong> <em>In modern civil engineering structures, laminated composites are widely used in various applications including roof of buildings, bridge decks, structural panels and beams. Using the laminated composite material in construction introduces many advantages such as high strength/stiffness to weight ratio, survivability in extreme weather conditions, durability, fatigue resistance, and design flexibility, easy to install in structure replacement. The behavior of laminated composites under free vibration, bending and buckling mode is very complex phenomenon because man
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8

Hu, Zheng, and Olexii Vambol. "TOPOLOGICAL DESIGNING AND ANALYSIS OF THE COMPOSITE WING RIB." Aerospace technic and technology, no. 6 (November 27, 2020): 4–14. http://dx.doi.org/10.32620/aktt.2020.6.01.

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The composite structures in the aerospace industry for in recent decades are widely applied however, at the beginning of the 21st century composites are growing rapidly. The largest companies in the aerospace industry are increasing the volume of composites application of in the structures, and nowadays the volume of composites reaches 50%. The different elements of aircraft and even highly loaded structures such as spars, ribs, skin, etc., are currently made from composites. First of all, this is due to the possibility of a significant reduction in the weight of the structure, as well as a de
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9

Yang, Can, Ming Lu, and Amir Reza Eskenati. "Multi-scale finite element modeling of bending behavior of 3D multi-cell spacer weft-knitted composites with different structures." Polymers and Polymer Composites 29, no. 9_suppl (2021): S1158—S1171. http://dx.doi.org/10.1177/09673911211046773.

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In the present study, a multi-scale finite element model is proposed to predict the linear and nonlinear behavior of the 3D multi-cell spacer weft-knitted composite under bending load. In this study, a unit-cell of the composite which includes plain and biaxial weft-knitted structures was modeled at the meso scale. Periodic boundary conditions were applied to the meso model to calculate the elastic constants of each composite structure. In order to obtain failure parameters of the composites, the Puck failure criterion model was utilized by a VUMAT code for the meso model. Afterward, the elast
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Li, Fenglei, Shengnian Zhang, and Wanxiang Cheng. "Application and Optimization of Wing Structure Design of DF-2 Light Sports Aircraft Based on Composite Material Characteristics." Journal of Nanomaterials 2022 (June 21, 2022): 1–10. http://dx.doi.org/10.1155/2022/6967016.

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Compared with ordinary metal structures, advanced composite materials have the characteristics of high strength, high rigidity, and light weight. The use of composite materials in aircraft structures is currently a hot research topic. This research mainly discusses the optimization design of the composite wing structure of the DF-2 light sports aircraft. This article takes the DF-2 light sports aircraft planned to be produced by the company as the source. Based on its overall design basis, aerodynamic requirements, and the original wing structure design, according to the composite material air
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Yang, Rui, Shiyong Sun, Wei Qian, and Dongming Guo. "A Precise Manufacturing Method of the Composite Structure-Similar Flutter Model." Advances in Mechanical Engineering 6 (January 1, 2014): 239780. http://dx.doi.org/10.1155/2014/239780.

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The composite structure-similar flutter model (ComSSM) not only shows higher structural efficiency but also provides convenience for the purpose of fabrication in the aerodynamic flutter model. The manufacturing process of ComSSM is different from conventional composites structures. The geometry parameters and nongeometry parameters of ComSSM need to be controlled cooperatively and precisely to obtain higher product quality. A method of precise manufacturing is developed based on the error calibration of nongeometry parameters. The accuracy of structural performance of ComSSM is ensured by red
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12

Liu, Xie Quan, Xin Hua Ni, Yun Ting Liu, and Bao Hong Han. "Mesomechanical Strength Model of Nano-Fibers Composite Ceramics." Solid State Phenomena 121-123 (March 2007): 1157–60. http://dx.doi.org/10.4028/www.scientific.net/ssp.121-123.1157.

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Recent experiment showed that nano-fibers composite ceramics, fabricated through SHS process, can acquire high toughening and strengthening. Composite ceramics are mainly composed of fiber eutectic structures with random orientation, in which nanometer sized zirconia fibers are dispersed within the alumina matrix. First, it can be visualized that tensile force is transmitted from the matrix to the nano-fiber by means of shear stress that develop along the fiber- matrix interface. Then the mesomechanical strength model of the fiber eutectic structure is built. The longitudinal tensile stress of
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Zhang, Yunqian, Lilong Luo, Guofan Zhang, Liang Chang, and Xiaohua Nie. "Tension Performance Prediction and Experiment of Optical Smart Composites Using Micromechanical Failure Theory." Journal of Physics: Conference Series 2891, no. 13 (2024): 132013. https://doi.org/10.1088/1742-6596/2891/13/132013.

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Abstract Embedding fiber optic sensors in composites can long-term instantly monitor the deformation and damage within the composite structure, which realizes structural health monitoring and life prediction. However, fiber embedding generally brings damage in terms of the composite material integrity and continuity, resulting the extreme stress concentration in the interface of the optical fiber and composite. Therefore, the mechanical properties of the composite material are potentially influenced unfavorably. To investigate the influence of microstructures such as optical fibers on the macr
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14

Chen, Bin, Da Gang Yin, Quan Yuan, Ji Luo, and Jing Hong Fan. "Model and Maximal Pull-Out Force of Helicoidal Fiber Structure in the Underpinnings of Tumblebug Cuticle." Materials Science Forum 686 (June 2011): 427–31. http://dx.doi.org/10.4028/www.scientific.net/msf.686.427.

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The observation of scanning electron microscope (SEM) on the cuticle of Tumblebug shows that the cuticle is a kind of biocomposite consisting of chitin-fibers and collagen protein matrix. The observation also shows that there are many underpinnings in the cuticle. The underpinnings are also a kind of biological composite consisting of chitin-fiber layers and collagen protein matrixes. More careful observation indicates that the chitin-fiber layers enwrap the core of the underpinnings forming a kind of helicoidal fiber structure. The maximal pull-out force of the helicoidal fiber structure, rel
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Sheshenin, Sergey, Nina Artamonova, Peter Klement’ev, Egor Orlov, and Julia Frolova. "Image-based simulation of dispersed composites and porous rocks." MATEC Web of Conferences 362 (2022): 01029. http://dx.doi.org/10.1051/matecconf/202236201029.

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The article presents the results of numerical simulation of the effective elastic properties and stress concentration of the dispersed composite and porous rocks as well as the elastoplastic diagrams of tensile stress of the B4C/2024Al composite using asymptotic averaging method. 2D and 3D simulations of uniaxial tension was carried out using the image-based models of the real structure obtained by X-ray tomography. We also used model structures of the B4C/2024Al composite, consisting of an aluminum matrix with boron carbide inclusions in the form of ellipsoids with a random orientation. It tu
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Zhu, Xiaosong, Ningjuan Dong, Lijuan Jiao, and Hui Zheng. "Uncertain sound transmission loss of composite laminated plates with embedded viscoelastic damping layer." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 268, no. 5 (2023): 3727–36. http://dx.doi.org/10.3397/in_2023_0532.

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Laminated composite structures have been widely applied in the engineering field due to their excellent capacities such as high specific stiffness, high specific strengths and tailorable anisotropic elastic properties. Embedding the viscoelastic damping layers into the laminated composites to construct co-cured composite damping structures provides an effective way to improve the sound insulation capability. In this paper, a semi-analytical model is proposed to investigate the sound transmission loss (STL) of composite laminated structure with embedded viscoelastic damping layer considering it
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17

Aveiga, David, and Marcelo L. Ribeiro. "A Delamination Propagation Model for Fiber Reinforced Laminated Composite Materials." Mathematical Problems in Engineering 2018 (June 19, 2018): 1–9. http://dx.doi.org/10.1155/2018/1861268.

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The employment of composite materials in the aerospace industry has been gradually considered due to the fundamental lightweight and strength characteristics that this type of materials has. The science material and technological progress reached matched perfectly with the requirements for high-performance materials in aircraft and aerospace structures; thus, the development of primary structure elements applying composite materials became something very convenient. It is extremely important to pay attention to the failure modes that influence composite materials performances, since these fail
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Sun, Hongshuo, Na Li, Yongchao Zhu, and Kailiang Liu. "A Model for Direct Effect of Graphene on Mechanical Property of Al Matrix Composite." Metals 13, no. 8 (2023): 1351. http://dx.doi.org/10.3390/met13081351.

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Direct effect of graphene on mechanical property of Al matrix composite has been studied by using molecular dynamic (MD) methods. The models of graphene-reinforced composite are achieved by modeling the sintering system consisting of Al particles and graphene nanosheets (GNSs), while pure Al models are obtained by deleting graphene in the composites. Structural analysis on composites indicate the increment of GNSs can promote the densification of metal matrix, increase the porosity in composite, and restrict the metal grain size. Such analysis is also performed on pure Al models, and the simil
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Lu, Biwang, and Jing He. "Equivalent Thermal Conductivity of Topology-Optimized Composite Structure for Three Typical Conductive Heat Transfer Models." Energies 17, no. 11 (2024): 2558. http://dx.doi.org/10.3390/en17112558.

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Composite materials and structural optimization are important research topics in heat transfer enhancement. The current evaluation parameter for the conductive heat transfer capability of composites is effective thermal conductivity (ETC); however, this parameter has not been studied or analyzed for its applicability to different heat transfer models and composite structures. In addition, the optimized composite structures of a specific object will vary when different optimization methods and criteria are employed. Therefore, it is necessary to investigate a suitable method and parameter for e
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Wang, Shu Yong, Jian Fu, and Qian Li Wang. "Finite Element Modeling Method of 3D Braided Composites Based on ICT Technique." Applied Mechanics and Materials 236-237 (November 2012): 16–20. http://dx.doi.org/10.4028/www.scientific.net/amm.236-237.16.

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A finite element modeling method based on industrial computed tomography (ICT) technique is proposed to address the insufficient accuracy of traditional grinding method for the meso-structure analysis of composite materials. In this method, the slice images of 3D composites are first acquired by ICT technique. And then, the internal meso-structure images of composite materials are obtained through the digital image processing to the slice images. Finally the meso-structure images are converted to vector format and inputted ANSYS to build the finite element model for the analysis of the mechani
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Roberts, A. P., and M. A. Knackstedt. "Structure-property correlations in model composite materials." Physical Review E 54, no. 3 (1996): 2313–28. http://dx.doi.org/10.1103/physreve.54.2313.

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DING, Zhendong, Hongshuang LI, and Xiaole GUAN. "Reliability analysis of composite sandwich structure for fuselage skin based on surrogate model." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 40, no. 2 (2022): 360–68. http://dx.doi.org/10.1051/jnwpu/20224020360.

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Composite structures are characterized by multiple source uncertainties in mechanical properties, geometric dimension, etc., and multiple failure modes, which bring challenges to their design and application. In order to explore the reliability analysis method of composite sandwich structures with multi-source uncertainties and multi-failure modes, a parametric finite element model and an acoustic boundary element model were established for deterministic analysis of a fuselage skin sandwich structure. Considering the randomness of the mechanical properties of composite materials and the lamina
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Jakkamputi, Lakshmipathi, Saravanakumar Devaraj, Senthilkumar Marikkannan, et al. "Experimental and Computational Vibration Analysis for Diagnosing the Defects in High Performance Composite Structures Using Machine Learning Approach." Applied Sciences 12, no. 23 (2022): 12100. http://dx.doi.org/10.3390/app122312100.

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Delamination in laminated structures is a concern in high-performance structural applications, which challenges the latest non-destructive testing techniques. This study assesses the delamination damage in the glass fiber-reinforced laminated composite structures using structural health monitoring techniques. Glass fiber-reinforced rectangular laminate composite plates with and without delamination were considered to obtain the forced vibration response using an in-house developed finite element model. The damage was diagnosed in the laminated composite using machine learning algorithms throug
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Musil, Miloš, and Ondrej Chlebo. "Use of Modal Synthesis for Composite Structures." Scientific Proceedings Faculty of Mechanical Engineering 22, no. 1 (2014): 69–74. http://dx.doi.org/10.2478/stu-2014-0012.

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AbstractA common occurrence in engineering practice is undesirable levels of vibration in the structures of machinery, which decrease their functionality, safety, reliability and service life. Current trends in the dynamic operation of machinery inherently generate such undesirable effects. That is to say, increasing the operational capacity of a machine (higher speeds, higher loads, more changes in operational regimes, etc...) is financially counterproductive to any desired savings in the material/technological realization of such structures. One possible approach to modify the dynamic proper
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Ren, Xiaoyang, Xiaoming Li, and Heyuan Huang. "Study on mechanical properties of bolted connection structure of carbon fiber resin matrix composites at low temperature." Journal of Physics: Conference Series 2762, no. 1 (2024): 012045. http://dx.doi.org/10.1088/1742-6596/2762/1/012045.

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Abstract This article focuses on the impact of low temperature environments that composite materials may face in engineering applications. Through experimental testing, the bearing capacity of carbon fiber resin based composite bolted structures at -100 ℃ and 25 ℃ was obtained, and a continuous damage model (CDM) was established. The damage evolution mechanism of bolted connection structures between metal and carbon fiber resin matrix composites at -100 °C and 25 °C was elucidated through numerical simulation. Research has shown that the ultimate load of the structure at -100 °C is 3.99% lower
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WEI, QUANLING, HONG YAN, and LIYONG PANG. "COMPOSITE NETWORK DATA ENVELOPMENT ANALYSIS MODEL." International Journal of Information Technology & Decision Making 10, no. 04 (2011): 613–33. http://dx.doi.org/10.1142/s0219622011004488.

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This paper extends the DEA model to considering the decision-making unit (DMU) with the network structure. We define the network DMU and its network DEA efficiency based on the postulate system. On the series structure of the DMU, we further discuss a sequential optimization model originally proposed by Sexton and Lewis.1,2 Based on their work, we extend to the DMU with general network of k stages and propose a composite network DEA model which evaluate the network DEA efficiency by solving only one linear programming. We show that the network efficiency obtained from the composite model is eq
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Hua, Zhiliang, Kang Wang, Wenfang Li, and Zhiyan Chen. "Theoretical Strategy for Interface Design and Thermal Performance Prediction in Diamond/Aluminum Composite Based on Scattering-Mediated Acoustic Mismatch Model." Materials 16, no. 12 (2023): 4208. http://dx.doi.org/10.3390/ma16124208.

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Inserting modification layers at the diamond/Al interface is an effective technique in improving the interfacial thermal conductance (ITC) of the composite. However, few study reports the effect of interfacial structure on the thermal conductivity (TC) of diamond/Al composites at room temperature. Herein, the scattering-mediated acoustic mismatch model, suitable for evaluating the ITC at room temperature, is utilized to predict the TC performance of the diamond/Al composite. According to the practical microstructure of the composites, the reaction products at diamond/Al interface on the TC per
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Tian, Ying Xia, Wei Huang, Dong Zhao, and Cheng Hua Zhang. "Simplified Calculation Model of Eco-Composite Wall Structure Based on Composite." Advanced Materials Research 250-253 (May 2011): 2098–101. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.2098.

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The eco-composite wall structure is a new structural system, characterized by ecology, low weight, high strength, saving energy and good aseismic performance. As the main load-bearing member of the structure, Multi-ribbed composite wall consists of concealed frame, concrete frame grids, ecological filling blocks and so on, which makes the entities calculation model extremely complicated. Therefore, it is necessary to present the simplified calculation model of the structure. Based on constitution and mechanical analysis of the multi-ribbed composite wall, the wall is equaled to an elastic plat
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Zhang, Chuan-Wei, Fang-Yi Li, Jian-Feng Li, Hai-Yang Lu, and Geng Wang. "Bubble Wall Rupture Model for Open Cell Structure in Starch/Fiber Heterogeneous Composites." Journal of Biobased Materials and Bioenergy 14, no. 2 (2020): 169–77. http://dx.doi.org/10.1166/jbmb.2020.1955.

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Starch/fiber heterogeneous composites were prepared through thermos-cavity foaming machine. Open cell structures are widely distributed in the heterogeneous composites. Bubble wall rupture is an inevitable stage in the formation of open cells. Different from the conventional models to explain the bubble wall rupture from the energy and the wave point of view, this study suggests the "local thinning ultimate stress" model to reveal the bubble wall rupture from the stress perspective. The local stress of the starch bubble wall is increased with the thinning of the bubble wall. The bubble wall ru
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Khalid, Salman, Hee-Seong Kim, Heung Soo Kim, and Joo-Ho Choi. "Inspection Interval Optimization for Aircraft Composite Tail Wing Structure Using Numerical-Analysis-Based Approach." Mathematics 10, no. 20 (2022): 3836. http://dx.doi.org/10.3390/math10203836.

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Recently, there has been a tremendous increase in the use of fiber-reinforced composite (FRCP) in the aviation and aerospace industries due to its superior properties of high strength, stiffness, and low weight. The most important feature of implementing composite materials in aviation is their behavior under dynamic loads and resistance to fatigue. To predict the life of composite structures and optimize the inspection interval, it is essential to predict the damage behavior of composites. In this study, a model of fatigue delamination damage of composite specimens was first constructed using
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Liang, Yunhong, Chang Liu, Qian Zhao, Zhaohua Lin, Zhiwu Han, and Luquan Ren. "Bionic Design and 3D Printing of Continuous Carbon Fiber-Reinforced Polylactic Acid Composite with Barbicel Structure of Eagle-Owl Feather." Materials 14, no. 13 (2021): 3618. http://dx.doi.org/10.3390/ma14133618.

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Inspired by eagle-owl feather with characteristics of light weight and high strength, the bionic continuous carbon fiber-reinforced polylactic acid composite with barbicel structure was successfully 3D printed. Under the action of external load, angles between barbicels and rachis structure of eagle-owl feather decreased, which consumed a part of energy and built structure base of bionic feather structure model with a certain arrangement angle of continuous carbon fiber. Variation of bionic structure model design parameters significantly affected the mechanical properties of the 3D printing bi
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Du, Ya Xiong, Shu Li, and Kai Guo. "Strength Analysis for Composite Windshield of Commercial Aircraft." Advanced Materials Research 1030-1032 (September 2014): 1010–13. http://dx.doi.org/10.4028/www.scientific.net/amr.1030-1032.1010.

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With the development of advanced composites technology, composites instead of traditional aluminum alloy, will be widely used to build full-size aircraft windshield structure in the aviation field. The finite element model of commercial aircraft composite windshield is established in the environment of Msc.Patran / Nastran. And based on Tasi-Wu failure criterion, the strength of windshield structure under typical load pressure is predicted and analyzed during failure processes. It shows that composite windshield can work better through rational design according to the analysis result.
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Dong, Fangyuan, Jiangtao Yu, Kaili Zhan, and Zhanhong Li. "Seismic fragility analysis of two-story ultra-high ductile cementitious composites frame without steel reinforcement." Advances in Structural Engineering 23, no. 11 (2020): 2373–87. http://dx.doi.org/10.1177/1369433220912350.

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This article numerically studies the seismic vulnerability of the frame structure made of ultra-high ductile cementitious composites without longitudinal and transverse reinforcement. A non-linear finite element model is established with the help of Open System for Earthquake Engineering Simulation and calibrated by shaking table test results on an ultra-high ductile cementitious composite-RC frame whose seismic vulnerable parts were replaced by ultra-high ductile cementitious composites without steel reinforcement. Subsequently, an analysis on the structural seismic vulnerability is performed
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Huang, Qian Yu, and Xiao Yu Zhang. "Finite Element Analysis of the Prestressed Composite Pipes." Applied Mechanics and Materials 687-691 (November 2014): 440–43. http://dx.doi.org/10.4028/www.scientific.net/amm.687-691.440.

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This topic develop the matrix composite pipes which has the ability of corrosion prevention and antiseep, also has the high strength of extension and stability, by using huge advantage of the corrosion prevention and antiseep performance of resin matrix composite, the high strength of extension of carbon steel, and also, the high stiffness of cement matrix composites. We design and optimize the structure of matrix composite pipes by study the relationship between deformation coordination based on the viscoelastic constitutive model of resin matrix composite, the homogeneity elastic constitutiv
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Aydogan, Burak, Berna Ayat, Yalçın Yüksel, Esin Çevik, and Özgen Goller. "EFFECT OF CREST ELEVATIONS ON THE OVERTOPPING DISCHARGES OVER COMPOSITE SEAWALL." Coastal Engineering Proceedings, no. 35 (June 23, 2017): 21. http://dx.doi.org/10.9753/icce.v35.structures.21.

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Overtopping discharges over a composite seawall model has been studied experimentally. Effect of crest elevations on the overtopping discharges was studied based on the new data set of 132 tests. Test data is compared to the existing formulas given by EurOtop Manual (2007) and EurOtop II Manual (2016). Results showed that both EurOtop Manual (2007) and EurOtop II (2016) formulas for composite seawalls are applicable to our test setup with a roughness coefficient of 0.55 which corresponds a rubble mound composite structure with two layers and an impermeable core.&#x0D; Vertical wall caused the
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Olivenko, Nikita A., Oleg A. Kudryavtsev, and Anastasia V. Ignatova. "Simplified Approach to Verification of Numerical Models for Deformation and Fracture Analysis of Structural Composite Subjected to High-Velocity Impact." Defect and Diffusion Forum 419 (October 20, 2022): 117–23. http://dx.doi.org/10.4028/p-3ivuh1.

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Deformation and fracture analysis of the composite elements and structures under high-velocity impact is still associated with many problems. These problems are related not only to the complexity of taking into account the composite layered orthotropic structure and various failure scenarios but also to the problems of instrumented high-velocity impact tests to verify the calculation results. Different requirements for accuracy and numerical efficiency are imposed on the models and their predictive ability depending on the design stage. At the initial design stages, the model should allow one
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Tian, Jie, Zhi Chao Yan, and Yang Yang Cao. "Nonlinear Earthquake Response Analysis of a New RC Frame Multi-Ribbed Composite Walls Structure." Advanced Materials Research 368-373 (October 2011): 173–78. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.173.

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A new RC frame multi-ribbed composite walls structure is provided by using low yield strength steel. Two calculating structures are analyzed which one is the RC frame shear wall structure used as a comparison, and the other is the RC frame multi-ribbed composite walls structure. The nonlinear earthquake responses of the structures are calculated by using program IDARC2D.The nonlinear dynamic analysis models of the structures are established with retrogressive three-linear resilience model for beam, column and RC shear wall elements, while a smooth hysteretic model is proposed for representing
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38

Petersen, Jan, Alexander Kube, Sebastian Geier, and Peter Wierach. "Structure-Integrated Thin-Film Supercapacitor as a Sensor." Sensors 22, no. 18 (2022): 6932. http://dx.doi.org/10.3390/s22186932.

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Today, aircraft composite structures are generally over-dimensioned to avoid catastrophic failure by unseen damages. This leads to a higher system weight and therefore an unwanted increase in greenhouse gas emissions. To reduce this parasitic mass, load monitoring can play an important role in damage detection. Additionally, the weight and volume of future aircraft structures can also be reduced by energy storing and load carrying structures: so-called power composites. In this study a novel method of combining both approaches for maximum weight reduction is shown. This is achieved by using po
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Krivenko, Olga P., Petro Lizunov, Yurii Vorona, and Oleksandr Kalashnikov. "Modeling of thermo-elastic properties of composite material in stability problems of multilayered shells." Management of Development of Complex Systems, no. 54 (June 2, 2023): 77–89. http://dx.doi.org/10.32347/2412-9933.2023.54.77-89.

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Thin-walled structures, the elements of which are plates and shells made of composite materials, are increasingly used in various industries. The growing needs of practice and the introduction of new composite materials require further improvement of the calculation methods of shell structures of inhomogeneous structure. Therefore, the problem of developing an adequate method of analyzing the behavior of shells made of composite materials with a multilayer structure is relevant. The work is devoted to the application of the developed method of finite elements for the analysis of geometrically
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Lizunov, Petro, and Valentyn Nedin. "Numerical study of transmission shafts dynamics in motion modes when the rotation speed changes." Management of Development of Complex Systems, no. 55 (September 25, 2023): 117–22. http://dx.doi.org/10.32347/2412-9933.2023.55.117-122.

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Thin-walled structures, the elements of which are plates and shells made of composite materials, are increasingly used in various industries. The growing needs of practice and the introduction of new composite materials require further improvement of the calculation methods of shell structures of inhomogeneous structure. Therefore, the problem of developing an adequate method of analyzing the behavior of shells made of composite materials with a multilayer structure is relevant. The work is devoted to the application of the developed method of finite elements for the analysis of geometrically
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41

Ensan, M. Nejad, D. G. Zimcik, M. Lahoubi, and D. Andrieu. "SOFT BODY IMPACT SIMULATION ON COMPOSITE STRUCTURES." Transactions of the Canadian Society for Mechanical Engineering 32, no. 2 (2008): 283–96. http://dx.doi.org/10.1139/tcsme-2008-0018.

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The paper describes recent progress on numerical simulation of soft body impact onto a fibre reinforced composite wing leading edge structure. The work is based on the application of non-linear explicit finite element analysis to simulate the response of composite wing structures under soft body impact loads. Soft body impactors such as gelatine (substitute bird) or ice (hailstones) are highly deformable on impact and flow over the structure spreading the impact load. Therefore, first benchmark simulations were carried out for soft body impact onto a rigid target. Soft body impactor was modele
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42

Li, Yuanyuan, Zhijuan Pan, Bohong Gu, and Baozhong Sun. "Numerical analysis of punch shear failure and stress characteristics of three-dimensional braided composite with different braiding angles." International Journal of Damage Mechanics 28, no. 9 (2019): 1418–37. http://dx.doi.org/10.1177/1056789519831046.

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This paper presents a multi-scale finite element model to calculate the stress field and analyze the punch shear failure of three-dimensional braided composite at high strain rates. The multi-scale model was established based on real braided structure taking the surface and corner braiding yarns into consideration. Constitutive material modeling and failure criterions were introduced into the model. Three braiding angles of 25°, 35°, and 45° were applied to reveal the relations between failure states and braided structure. The results showed that the punch shear failure states and stress distr
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Mi, Zhaoguo, Zhenhua Chen, Kanghe Jiang, and Weihua Yang. "Investigation of the Film Cooling Performance of Laminated SiCfSiC Composite Plates." Aerospace 11, no. 8 (2024): 642. http://dx.doi.org/10.3390/aerospace11080642.

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Silicon carbide fiber-reinforced silicon carbide matrix ceramic composites (SiCf/SiC) are extensively utilized in high-temperature resistant materials in the aerospace industry. This study investigated the influence of stacking structure on the performance of SiCf/SiC laminated composite plates with film cooling. Initially, the thermal conductivity of cross-piled SiCf/SiC composites was determined using the laser flash analysis (LFA) method and differential scanning calorimetry (DSC) method. Subsequently, a representative volume element (RVE) model that reflected the stacking structure was est
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Gołębiowski, Łukasz, Marcin Siwek, Marcin Ciesielski, Andrzej Zagórski, Sławomir Krauze, and Radosław Majewski. "Modelling and Validation of the Composite Shell of a Train Seat." Problemy Kolejnictwa - Railway Reports 64, no. 189 (2020): 75–84. http://dx.doi.org/10.36137/1891e.

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The subject of the modelling work and the conducted experiments is the composite shell of a train seat. The activities carried out involved designing the geometry, planning the material structure, and selecting the materials to be used. The shell was built using polymer matrix fibrous composites (i.e. FRP – Fibre Reinforced Polymer – composites), which are lighter than steel and comply with the relevant standards for strength and safety at the same time. This was followed by creating a computational model for the shell and conducting a strength analysis in accordance with the guidelines of the
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Qu, Ligang, Peng Li, Guangming Lv, Jing Li, and Xian Luo. "Rivet Structural Design and Process Optimization for the Double-Sided Countersunk Riveting of Composite Wedge Structures." Aerospace 11, no. 2 (2024): 165. http://dx.doi.org/10.3390/aerospace11020165.

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Within the double-sided countersunk riveting process of aircraft wings with a composite wedge structure, riveting consistency is poor, and composite damage is severe, which seriously affects the performance and reliability of the aircraft structure. This paper used the principal stress method to establish a stress model of countersunk riveting, and, based on the analysis of the stress on the structure during the pressure-riveting process, a composite structure rivet was designed. A finite element simulation model of the double-sided countersunk riveting of composite wedge structures’ composite
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Tokarska, Magdalena. "A Mixing Model for Describing Electrical Conductivity of a Woven Structure." Materials 15, no. 7 (2022): 2512. http://dx.doi.org/10.3390/ma15072512.

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The main aim of the research was to describe electro-conductive woven structures by specifying the phases’ exponents using the generalised Archie’s law. Special woven structures were designed to transfer Archie’s model to the textile object. The woven structure was treated as a complex multiphase mixture. The structure was composed of two conducting phases (strips and strip contacts) and one non-conducting phase (pore space). It was found that the designed structures were characterised by the phases’ exponents that exceeded the value of 2, which denoted low connectivity in the conductive phase
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Yuan, Fang, Jinlong Pan, and Christopher KY Leung. "Elastoplastic time history analysis of reinforced engineered cementitious composite or engineered cementitious composite–concrete composite frame under earthquake action." Advances in Structural Engineering 20, no. 4 (2016): 491–503. http://dx.doi.org/10.1177/1369433216655809.

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Engineered cementitious composite is a class of high-performance cementitious composites with pseudo-strain hardening behavior and excellent crack control capacity. Substitution of concrete with engineered cementitious composite can greatly reduce the cracking and durability problems associated with low tensile strength and brittleness of concrete and can significantly increase structural seismic resistance. In this article, a pair of beam–column joints with various matrix types has been tested under reversed cyclic loading to study the effect of substitution of concrete with engineered cement
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Kiselev, Denis G., Evgeniy Valerjevich Korolev, and Vladimir Smirnov. "Structure Formation of Sulfur-Based Composite: The Model." Advanced Materials Research 1040 (September 2014): 592–95. http://dx.doi.org/10.4028/www.scientific.net/amr.1040.592.

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In material science the simultaneous application of theoretical examination, experimental and numerical studies are often required. This is especially true for modern composite materials with extra inter-boundary nanoscale layers. Thickness of layers is usually about tens of nanometers, while diameters of particles of filler are about several hundreds of nanometers. Thus, during the theoretical study and numerical experiments the size and properties of inter-boundary layer must be taken into account. The proper choice of the model is the key factor for the adequate results of simulation. In th
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Azikov, N. S., and A. V. Zinin. "A Destruction Model for an Anisogrid Composite Structure." Journal of Machinery Manufacture and Reliability 47, no. 5 (2018): 427–33. http://dx.doi.org/10.3103/s1052618818050035.

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Li, Chenglei, Yang Lu, Chunbo Lan, and Yang Wang. "Noise Reduction in Helicopter Cabins Using Microperforated Panel Composite Sound Absorption Structures." Applied Sciences 13, no. 14 (2023): 8153. http://dx.doi.org/10.3390/app13148153.

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The high level of noise in helicopter cabins considerably compromises the comfort and safety of the pilot and passengers. To verify the feasibility and effectiveness of microperforated panel composite sound absorption structures for noise suppression in helicopter cabins, simulation and experimental studies were conducted on a model of a light helicopter cabin. First, three microperforated composite sound absorption structures for the helicopter cabin wall panel were designed. Then, a finite element model of the main gear/body acoustic vibration coupling was established to obtain the target fr
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