Journal articles: 'Thin-walled structures Design and construction'

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Palacios Rodríguez, Susana, Jesús Anaya Díaz, and Borja Cruz López. "Lightweight construction design with bearing surfaces. Thin-walled structures." Revista de la construcción 18, no. 2 (2019): 398–408. http://dx.doi.org/10.7764/rdlc.18.2.398.

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Řeháček, Stanislav, Petr Huňka, David Čítek, Jiří Kolísko, and Ivo Šimúnek. "Impact Resistance of Thin-Walled Shell Structures." Applied Mechanics and Materials 617 (August 2014): 96–99. http://dx.doi.org/10.4028/www.scientific.net/amm.617.96.

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Fibre-reinforced composite materials are becoming important in many areas of technological application. In addition to the static load, such structures may be stressed with short-term dynamic loads or even dynamic impact loads during their lifespan. Dynamic effects can be significant especially for thin-walled shell structures and barrier constructions. Impact loading of construction components produces a complex process, where both the characteristics of the design itself and the material parameters influence the resultant behavior. It is clear that reinforced concrete with fibers has a positive impact on increasing the resistance to impact loads. Results of impact load tests carried out on drop-weight test machine are presented in this paper. The results are supplemented by compression strength test.

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Umnova, Olga, Dmitry Tuev, and Timur Giyasov. "Design of low-rise buildings from thin-walled steel frame structures." MATEC Web of Conferences 193 (2018): 03037. http://dx.doi.org/10.1051/matecconf/201819303037.

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Addressing sustainable development challenges, Russia is seeking new opportunities for the use of thin-walled cold-cast structures to meet the requirements of cost-effectiveness, eco-friendliness, and rapid construction. The study aims to explore the possibilities of design and calculation of low-rise buildings erected from lightweight thin-walled steel structures using frame construction technology. The design solutions for the roof, walls, floors, and foundation are exemplified using concrete examples. The load capacity off framing studs, roof beams, and floor slabs was calculated. Three methods were used for calculation - Eurocode 3, direct strength test, and ultimate load test in compliance with AISI standards.

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Korsun, Natalia D., and Daria A. Prostakishina. "Applicability of thin-walled structures for energy-savings in steel construction." E3S Web of Conferences 91 (2019): 02042. http://dx.doi.org/10.1051/e3sconf/20199102042.

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The paper discusses the use of lightweight thin-walled structures which make it possible to save resources in steel construction. The highlighted challenges that this industry face in the Russian Federation involve insufficient development of the domestic standards. A thin-walled sigma-profile element with 300 mm in a section height has been studied. The element, its design diagram and loading have been chosen taking into account the structural performance of the columns and girders involved in CFS frameworks. The paper presents analysis technique for a thin-walled profile which performs under axial compression and axial bending compression. The structures have been calculated taking into account their main feature - the initial geometric imperfections. The analysis of the changed effective characteristics and stresses in the cross-section has revealed the significant influence of the initial geometric imperfections of the profiles and location of the extra eccentricity against the element’s initial curvatures. The elastic-plastic behaviour of material occurs when the stresses in the full cross-section achieve 0.71 Ryignoring the initial geometric imperfections, and 0.58 Ry– with regard to them. The paper substantiates the need to consider unevenness of the mechanical properties of steel distributed over the cross-section of the profile. Based on the experimental data obtained, conclusions have been drawn on the necessary adaptation of the indirect method for evaluating the strength characteristics of thin-walled samples.

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Řeháček, Stanislav, Petr Huňka, David Čítek, and Ivo Šimúnek. "Impact Resistance of Steel Fibre Reinforced Thin-Walled Shell Structures." Advanced Materials Research 1000 (August 2014): 203–6. http://dx.doi.org/10.4028/www.scientific.net/amr.1000.203.

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Fibre-reinforced composite materials are becoming important in many areas of technological application. In addition to the static load, such structures may be stressed with short-term dynamic loads or even dynamic impact loads during their lifespan. Dynamic effects can be significant especially for thin-walled shell structures and barrier constructions. Impact loading of construction components produces a complex process, where both the characteristics of the design itself and the material parameters influence the resultant behavior. It is clear that reinforced concrete with fibers has a positive impact on increasing the resistance to impact loads. Results of impact load tests carried out on drop-weight test machine are presented in this paper. The results are supplemented by static modulus of elasticity.

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ŠKALOUD, MIROSLAV, and MARIE ZÖRNEROVÁ. "THE POST-BUCKLED BEHAVIOR IN THIN-WALLED CONSTRUCTION AND ITS PARTIAL "EROSION" UNDER REPEATED LOADING." International Journal of Structural Stability and Dynamics 11, no. 05 (October 2011): 805–27. http://dx.doi.org/10.1142/s021945541100435x.

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There are two ways to make steel construction more competitive: (i) to save steel (via thin-walled structures) and (ii) to save fabrication costs (via economic-fabrication structures). The authors' studies on post-buckled behavior in thin-walled construction and its partial "erosion" under many times repeated loading are described. S–N curves are established by the authors based on their numerous tests, such as to be used in the design of webs breathing under repeated loading. A reduction of some fabrication procedures as a way to economic-fabrication construction is discused, e.g. the possibility to avoid straightening of plate elements involved. Formulae for a user-friendly design of the webs of economic-fabrication steel girders, such as to make it possible to disregard their breathing, are also presented.

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HLADYSHEV, Hennadii, Dmytro HLADYSHEV, and Roman ZHURAVLOV. "ESTIMATION OF VARIABILITY OF STEPS OF ARMATURE IN A MONOLITHIC REINFORCED CONCRETE COVER OF A TOWER INDUSTRIAL CONSTRUCTION." Building constructions. Theory and Practice, no. 9 (December 28, 2021): 45–53. http://dx.doi.org/10.32347/2522-4182.9.2021.45-53.

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The work considers one of the possible reasons for reducing the operational reliability of monolithic thin-walled load-bearing reinforced concrete structures of existing industrial structures in relation to their design solution. As this reason is considered the variability of distances between axes of cores of working inspectedarmature of such designs is quite common.Comparison of design solutions with the qualityof construction and installation work makes it possible to identify the influence of unaccounted factors in the design of monolithic thin-walled reinforced concrete structures, which reduce their serviceability due to variability of concrete strength characteristics and actual longitudinal and transverse reinforcement due to variability of workingsteps. While processing the results of the survey ofmonolithic reinforced concrete thin-walled structures, which perceive the efforts of different levels,the question arises: which step of the working reinforcement, from a large number of actually measured steps, to choose in verified calculations –average or maximum, with extras.In the current norms, an indicator as the averagevalue of concrete strength for the calculation ofreinforced concrete monolithic slab structures doesnot appear, but is used as a statistically reasonablevalue of concrete strength, which takes into account its normalized variability with 95% security.Regulatory documents statistically estimates thevariability of reinforcement strength. At the sametime, they do not take into account the variabilityof the actual reinforcement of monolithic reinforced concrete structures, which is the subject forreconstruction of additional loads, but they aremade without observing the design distances between the reinforcement in these structures.When performing verified calculations of suchstructures for different design situations, to develop working designs for overhaul, reinforcement,reconstruction or dismantling, it is necessary todetermine which actual step of the working reinforcement should be taken with other defined design parameters of the structure.The authors instrumentally investigated and statistically analyzed the data of reinforcement of themonolithic reinforced concrete shell of the towerstructure, which made it possible to reasonablyaccept the values of the reinforcement steps in thetest calculations.

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Usami, Tsutomu, Yi Zheng, and Hanbin Ge. "Seismic Design Method for Thin-Walled Steel Frame Structures." Journal of Structural Engineering 127, no. 2 (February 2001): 137–44. http://dx.doi.org/10.1061/(asce)0733-9445(2001)127:2(137).

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Fu, Jie, Qiang Liu, Kangmin Liufu, Yuanchang Deng, Jianguang Fang, and Qing Li. "Design of bionic-bamboo thin-walled structures for energy absorption." Thin-Walled Structures 135 (February 2019): 400–413. http://dx.doi.org/10.1016/j.tws.2018.10.003.

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Ghareb, AL-Hasnawi Yasser Sami, Andrey V. Shevchenko, and Omar Ismael Alhashimi. "Light Steel Thin -Walled Structures Composite Beam of Cellular Concrete." Materials Science Forum 974 (December 2019): 596–600. http://dx.doi.org/10.4028/www.scientific.net/msf.974.596.

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The cost-efficient field design is very important in the civil engineering. Therefore, the cold-formed steel structures (CFS) are preferred for construction. A Sophisticated CFS structure which uses a Cellular Concrete is implemented in this paper. The utilization Cold-Formed Steel (CFS) structures have become increasingly popular in different fields of building technology. The reasons behind the growing popularity of these products include their fabrication ease, high strength/weight ratio and suitability for a wide range of applications. These advantages can result in more economic designs, as compared with hot-rolled steel, especially in short-span applications. In this project work an attempt to use a Cold formed steel section as replacement to conventional steel reinforcement bar has been made.

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Qahorov, K. Q., O. E. Sysoev, and E. O. Sysoev. "Influence of Class of Concrete on Oscillations of Thin-Wall Cylindrical Reinforced Concrete Shells." Materials Science Forum 992 (May 2020): 59–65. http://dx.doi.org/10.4028/www.scientific.net/msf.992.59.

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Thin-walled cylindrical shell made of reinforced concrete, is widely used in the construction of buildings and structures as coatings and forms of architecture of buildings. Thin-walled shell its shape can give entertainment to the architectural design of buildings, and their rigidity helps to block large spans, creating more closure of the room without additional supports. Another advantage of using cloud forms of structures is the efficiency of this design, since for the manufacture of shell forms of structures less construction material is spent than any other design for coating. The purpose of theoretical calculations and the studied excrement over reinforced concrete shells with different elastic modules, is to ensure reliability in the operation of buildings and structures, and to exclude accidents arising resonance phenomena of free vibrations of the shells from the effects of external forces (loads). On the basis of the laboratories of Komsomolsk-on-Amur state University in the laboratory of building materials and structures, experimental studies were conducted to determine the spectra of forced and free vibrations of the reinforced concrete shell with different elastic modules. The purpose of research on reinforced concrete shells is to determine the oscillation frequencies at different locations of the combined masses. The article deals with the theoretical calculation based on the equation of the theory of flat thin-walled shells, using the Bubnov-Galerkin method, by which we determine how the parameters of the shell affect the process of free oscillation.

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Mamieva, Iraida A. "Large-span structures in diploma projects of students architects of RUDN University." Structural Mechanics of Engineering Constructions and Buildings 16, no. 3 (December 15, 2020): 233–40. http://dx.doi.org/10.22363/1815-5235-2020-16-3-233-240.

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At present, there is a renewed interest in the design and application of wall structures in architecture and construction. With the advent of modern computers, refined methods for calculating shells, new building materials, the development of differential geometry and the rapid growth of numerical methods of calculation, it became possible to create architectural masterpieces from shells of canonical and non-canonical forms, which can be the hallmark of a city or country. This emerging trend among young Russian and foreign specialists inspires optimism among scientists who are researching thin-walled shells. The article considers some results of the work of the Department of Civil Engineering of the Engineering Academy of the Peoples Friendship University of Russia on attracting students to architectural design and involving undergraduates in researches on architecture, the theory of thin-walled spatial structures and their application in construction and architecture. The publications of students in this field are presented.

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Choo, Y. S. "Recent Development and Innovation in Tubular Structures." Advances in Structural Engineering 8, no. 3 (July 2005): 217–30. http://dx.doi.org/10.1260/1369433054349097.

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This paper highlights some of the research results achieved by the author and his teammates on tubular structures and thick-walled circular hollow section (CHS) connections. Excellent research and developmental work on thin-walled CHS connections has been conducted by a number of world renowned experts. However, there is little available information on thick-walled CHS connections, which are joints with chord outer radius-to-wall thickness ratio γ ≤ 10. This paper first presents the plastic load approach for strength definition of tubular joints and shows that current design recommendations may be un-conservative for thick-walled joints with equal diameter brace and chord members with γ ≤ 3.5. The behaviour of CHS K-joints, including the chord stress effect, is then summarized. The results from a detailed study on an innovative and effective external reinforcement scheme for CHS joints are presented. The paper also highlights the results obtained for the strength of fabricated pipe trunnions using the through brace scheme and novel implementation for plated structures which resulted in cost effective designs for heavy lift installation of structures.

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Krivoshapko, S. N., and Svetlana Shambina. "Design of developable surfaces and the application of thin-walled developable structures." SAJ - Serbian Architectural Journal 4, no. 3 (2012): 298–317. http://dx.doi.org/10.5937/saj1203298k.

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This manuscript is an attempt to collect and systematize all cardinal scientific results of geometrical design of nondegenerate developable surfaces with a cuspidal edge. Information on the application of thin-walled developable structures and developable surfaces has also been presented. Wide choices of design methods of developable surfaces provide not only necessary shapes and special properties but they also prove to be convenient to apply. This surface is actively applied for design of ship hulls, in agricultural machine building, in aircraft construction, in pipe design for making the diverse transitions, in road building, in cartography and in civil engineering.

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De Vos, G. P. J., and B. W. J. Van Rensburg. "Design and construction considerations for light steel structures." Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 20, no. 3/4 (September 29, 2001): 101–7. http://dx.doi.org/10.4102/satnt.v20i3/4.257.

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Many alternative structural systems have recently been proposed in South Africa in an attempt to reduce costs of lightweight steel structures. Most of these comprise premanufactured components which are bolted together on site. Large industrial type structures are usually constructed with hot-rolled steel profiles, so that, apart from the architect, a structural engineer, manufacturer and contractor would be required. As an alternative to these existing practices, this article proposes design and construction techniques that may reduce the cost of the structure and at the same time create employment for emerging contractors. The proposed construction method consists of the welding together of lightweight profiles on site. For the structure the following is proposed: short pile footings to provide partial fixidity to the structure, effective and lightweight compositions of cold-formed thin-walled profiles for structural elements, and stressed skin diaphragm design wherein the cladding, purlins and structural elements work together as one unit. Alternative portal frame configurations were analysed and designed to form larger structures, which indicates the versatility of the proposed construction concept. The article further illustrates that the utilization of the proposed construction method results in more economical structures and discusses applications of the principles on a number of real structures.

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Khokhrіakova, Daria. "MANUFACTURABILITY FACTORS OF PREFAB-CONSTRUCTION FROM STEEL THIN-WALLED COLDFORMED ELEMENTS." Current problems of architecture and urban planning, no. 63 (April 14, 2022): 358–71. http://dx.doi.org/10.32347/2077-3455.2022.63.358-371.

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The article systematizes the factors and their influence on the manufacturability of prefab structures from steel thin-walled cold-formed elements. It is known that LSTS are modern building structures that are efficient in terms of material consumption. Despite this, many of them, due to labor costs during manufacture and installation, are characterized by increased cost, and cannot always be considered technologically advanced. Since the study of manufacturability factors opens up new opportunities for their effective use in the design of objects from LSTS, the author classifies them into two groups: factors determined by the level of development of means of production; factors determined by the properties of objects of labor. As a result of a brief review of the development of manufacturability ideas, a number of provisions have been formulated regarding a clear distinction between factors and indicators of the manufacturability of objects and structures. Based on the performed comparative analysis, two types of equipment for the production of LSTS were identified: type I – for low-rise frame-panel construction; type ІІ – for all options for the use of LSTS in construction, incl. for multistorey and commercial construction. The efficiency of modern LSTS production depends on the following parameters: design time, time for transferring details to equipment, speed of the production process, production changeover time. It is noted that the speed of profiling is not a key parameter for the production of LSTS. More important is the issue of equipment readjustment to other profile sizes, which can cause significantly more time than the rolling process itself, and, accordingly, reduces the manufacturability of LSTS. A significant characteristic of a modern line, which ensures the manufacturability of the production of LSTS, is the presence of a minimum set of presses to perform the necessary operations on the produced profile (bulging, profile bending, cutout in the fabric, holes for screws, crimping of the ends of the profile), which reduce labor intensity and speed up the subsequent assembly of structures from steel thin-walled cold-formed elements. It seems promising to design LSTS only from C-profiles of the same section and thickness due to an increase in their manufacturability by eliminating such factors as changing equipment to a profile of a different type, sorting elements when assembling a bundle of panels, transporting structures from the factory when using compact lines directly on the construction site. It is substantiated that the use of lines of the first type is effective for the implementation of this approach.

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Yin, Hanfeng, Guilin Wen, Zhibo Liu, and Qixiang Qing. "Crashworthiness optimization design for foam-filled multi-cell thin-walled structures." Thin-Walled Structures 75 (February 2014): 8–17. http://dx.doi.org/10.1016/j.tws.2013.10.022.

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Šapalas, Antanas, Gintas Šaučiuvėnas, Konstantin Rasiulis, Mečislovas Griškevičius, and Tomas Gečys. "BEHAVIOUR OF VERTICAL CYLINDRICAL TANK WITH LOCAL WALL IMPERFECTIONS." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 25, no. 3 (March 29, 2019): 287–96. http://dx.doi.org/10.3846/jcem.2019.9629.

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Design of modern thin-walled metal structures is widely used around the world. In recent decades, more comprehensive research is carried out to investigate the behaviour of various thin-walled structures. Generally, the structure with regular geometry is investigated. In various countries such as USA, Russia, and the European Union issued the standards on regulation of the construction, design and maintenance of thin-walled structures. The actually used period of tanks usually is longer than recommendatory period. Recommendatory maintenance period of metal tanks is 15–20 years. Therefore, for such structures one of the most considerable questions is the residual load bearing capacity beyond the end of the maintenance period. This phase of using of structures is associated with complex investigation and numerical analysis of thin-walled structures. In this paper the load bearing capacity of the steel wall of the existing over-ground vertical cylindrical tank in volume of 5,000 m3 with a single defect and with a few contiguous local defects of the shape is analyzed. Calculations carried out are taking into account all the imperfections of the wall geometry. A major goal of the research – developing a realistic numerical model of the object analyzed, taking into account all the imperfections, determining the wall stress and strain state, exploring the places of extreme points, calculating the residual load bearing capacity of the tank and scrutinizing possible strengthening schemes for defective areas.

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Lee, Seung Sik, Soon Jong Yoon, and Sung Yong Back. "Buckling of Composite Thin-Walled Members." Key Engineering Materials 326-328 (December 2006): 1733–36. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.1733.

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The use of pultruded fiber reinforced polymeric (FRP) members in civil engineering applications can greatly reduce construction time and maintenance cost of structures, because pultruded members have high specific strength and excellent corrosion resistance compared to steel and concrete. Pultruded members for civil engineering application are mostly made of a polymeric resin system reinforced with E-glass fibers and, as a result, they have low elastic moduli. Therefore, stability is an important issue in the design of pultruded members. In this paper, the results of an experimental investigation into the global buckling behavior of pultruded thin-walled members subjected to axial compression are presented. The analytical solutions are validated through a comparison with the results of FE analysis as well as the experimental results.

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Khokhrіakova, D. O. "Prefab – technology using light steel thin-walled structures and prospects for its development in Ukraine." Ways to Improve Construction Efficiency 1, no. 48 (June 24, 2021): 62–74. http://dx.doi.org/10.32347/2707-501x.2021.48(1).62-74.

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Foreign experience testifies to the widespread use of prefab – technologies using light steel thin-walled structures, due to a significant economic effect, which is achieved by reducing the loads from the dead weight of structures, reducing transport costs, and reducing construction time. A comparative analysis of the normative and technical base shows that national standards bodies in European countries, unlike Ukraine, maintain the relevance of a sufficiently large package of existing standards for prefab technologies and create new ones to meet the needs of the construction industry. The introduction of design standards for structures made of thin-walled cold-formed elements in Ukraine occurs with a delay of several years, and for prefabs there are no standards at all. In order to structure a wide range of prefab – structures made of light steel thin-walled structures and improve the ability of the construction industry to assess the effectiveness of various design and technological solutions, their classification according to the degree of completeness and enlargement is presented. The analysis of the available experience allowed us to form the areas of effective application of prefab – systems for buildings for various purposes, considering the characteristic requirements. The difficulties that the construction industry of Ukraine may face in the implementation of this technology are predicted: due to the persistent image of low-quality prefabricated houses of the Soviet era, the consumer prefers traditional technologies, the size of the initial investment repels developers, the lack of specific skills related to modular construction among designers and works contractors, the low competitiveness of Ukrainian companies in this sector against the background of foreign companies operating at the international level reduces the economic benefits of the state. Steps are proposed for the introduction of prefab – technologies in Ukraine: improvement of normative and technical and budgetary bases, training of engineering personnel, adaptation of business models, planning and financing of a modular approach, creation of an appropriate coordination center.

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Huang, Qian, Xiaoguang Wu, Hui Wei, and Qida Chen. "Innovative Design of Novel Main and Secondary Arch Collaborative Y-Shaped Arch Bridge and Research on Shear Lag Effect of Its Unconventional Thin-Walled Steel Box Arch Ribs." Applied Sciences 12, no. 16 (August 22, 2022): 8370. http://dx.doi.org/10.3390/app12168370.

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The first main and secondary collaborative Y-shaped steel box arch bridge under construction in China is a rarely seen innovative practice among bridges already built at home and abroad, which is an attractive engineering research topic in the field of advanced bridge design and construction, and the investigation of this bridge has made a groundbreaking contribution. The structure of unconventional thin-walled steel box arch ribs is very novel, abandoning the traditional two-dimensional arch rib structure form and adopting the new structural mode of single–double combination and joint working of main and secondary arches. However, for this innovative design, many technical difficulties including innovative design details, mechanical behavior of thin-walled structures and construction methods still need to be pioneeringly explored and thoroughly researched. In this paper, the innovative design concept of unconventional thin-walled arch ribs for spatial Y-shaped steel box arch bridges is described, and a comparative analysis with the corresponding conventional single arch rib structure is carried out. Due to the limitations of the common conventional arch bridge research methods, a combined global and local finite element method is used to analyze the static and dynamic properties of the structure, and the shear lag effect of the thin-walled steel box arch ribs is studied in a pioneering and exploratory approach. In addition, the stress distribution of the bifurcated section of the arch ribs and the configuration of the diaphragm are analyzed in detail to verify the reasonableness, advantage and applicability of the innovative design. The results show that the main and secondary arch collaboration Y-shaped steel box arch bridge has reasonable structure and superior mechanical properties and has a greater value for promotion The design concept and analysis method are worthy of use as a reference for the aesthetical and mechanical design of similar spatial Y-shaped arch bridges in the future.

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Krivoshapko, Sergey N. "Shell structures and shells at the beginning of the 21st century." Structural Mechanics of Engineering Constructions and Buildings 17, no. 6 (December 30, 2021): 553–61. http://dx.doi.org/10.22363/1815-5235-2021-17-6-553-561.

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Researchers know that golden century of shells falls on 1920-1960 when the finishing of building of a thin-walled shell became an important event in life of country where this shell was erected. Every built shell was analyzed in tens of scientific works with a point of view of used method of analysis, applied constructive materials, cost of erection. Later on, an interest to thin-walled shells fell down. On the base of the fulfilled research in a paper, it is shown that application of shell structures is increasing in the 21st century because it was closely connected with needs of different branches of human activity. It is proved, that practically in all countries of the world, design and building of shell structures and shells was carried out. Only priority in application constructive materials changed. In the main, reinforced concrete was used earlier but now bar curvilinear structures, composite shells, and bar structures with the glass filling are in priority. It is shown that young and prominent architects and engineers tale part in construction of considered structures and thin-walled shells. All conclusions are confirmed by references containing 38 used original sources.

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Alpatov, Vadim, and Alexey Soloviev. "Thin-walled profiles and their joint assembly units built with screws: numerical studies of load bearing capacity." MATEC Web of Conferences 196 (2018): 01008. http://dx.doi.org/10.1051/matecconf/201819601008.

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There is a tendency to reduce weight of load-bearing metal structures being developed and successfully realized in modern building construction. This idea serves as a basis for a whole scientific direction, named Development and application of light steel thin-walled structures (LSTS). Among them, LTST built with pop-rivets and thread-cutting screws are most widespread due to their simplicity and relative cheapness This paper presents numerical studies of LSTS joint assembly units built with screws and their load bearing capacity. The peculiarity of these units consists in misalignment of joint elements. The calculation was performed in the SolidWorks Simulation System. The modeled node is a three-dimensional assembly consisting of solid components. The results of the study are as follows: 1) thin-walled profiles have a significant sensitivity to eccentricity; 2) it is unacceptable to disregard eccentricities for thin-walled profiles and their joint connections; 3) eccentricities should be compensated by measures to improve reliability in joint connections design.

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Yin, Hanfeng, Guilin Wen, Xin Wu, Qixiang Qing, and Shujuan Hou. "Crashworthiness design of functionally graded foam-filled multi-cell thin-walled structures." Thin-Walled Structures 85 (December 2014): 142–55. http://dx.doi.org/10.1016/j.tws.2014.08.019.

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Gridnev, S. Yu, O. A. Sotnikova, and E. E. Prokshits. "NUMERICAL STUDIES OF THE INFLUENCE OF THE PARAMETERS OF THIN-SHELL DOME STRUCTURE ON THEIR OPTIMIZATION FROM THE POSITION OF SPATIAL STABILITY." Russian Journal of Building Construction and Architecture, no. 1(49) (February 24, 2021): 6–18. http://dx.doi.org/10.36622/vstu.2021.49.1.001.

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Statement of the problem. The task was to evaluate the influence of the parameters of thin-walled dome coatings using the capabilities of modern software complexes. The method of optimization of dome covering structures with selection of criteria and parameters of the task has been improved. Results. The article presents the results of refinement and testing of the methodology for addressing the problem of optimizing dome structures with the choice of criteria and parameters of the optimization problem using the capabilities of the Topological Optimization module of the finite-element computational complex MidasCivil. The objective function was considered dependent on the thickness of the dome, the modulus of elasticity of the Poisson coefficient of the material. The study employs the positions of the theory of elasticity, solid body deformation mechanics, construction mechanics, as well as mathematical modeling methods based on the use of the finite element method employing modern licensed finite-element computing complexes Midas Civil and the Ing + architectural and construction design system of the calculation module MicroFe. Conclusions. Using the methods of optimal (in particular, geometric) design, the most affecting parameters of thin-walled dome coatings and their combinations were identified. This will allow us to design the most rational, economical and architectural-expressive dome structures as well as to make sound design decisions.

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Komarov, V. A., E. A. Kishov, O. G. Laikova, and A. A. Pavlov. "Digital design of heat-resistant dimensionally stable carbon laminate (CFRP) structures." VESTNIK of Samara University. Aerospace and Mechanical Engineering 20, no. 1 (April 20, 2021): 75–86. http://dx.doi.org/10.18287/2541-7533-2021-20-1-75-86.

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Special features of designing heat-resistant dimensionally stable structures are considered. A new design procedure is proposed, in which finite elements are used as a language for describing the load-bearing structure of a construction and the distribution of material in it considering the possibility of setting the desired structure of a composite material. The design task is formulated in terms of nonlinear mathematical programming. A sequence of digital models is used for its approximate solution in the interactive mode. The specific features of finite element modeling of thin-walled structures made of laminated composite material are discussed. The technique is demonstrated using the example of the development of a large-size space telescope body.

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Панченко, Л., Larisa Panchenko, Е. Ерижокова, and E. Erizhokova. "GLASS FIBER REINFORCED CONCRETE IN THIN-WALLED CONSTRUCTIONS." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 4, no. 4 (April 25, 2019): 70–76. http://dx.doi.org/10.34031/article_5cb1e65c9f1f72.39954168.

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Fibrous composites are progressive materials for buildings and structures. Structures based on them are characterized by high technical and economic characteristics. Glass fiber concrete is effective for thin-walled structures. Various principles of structural mechanics applied to fiber composites are pro-posed for solving design problems. The optimal configuration of the covering is determined by the sta-tionarity of its potential energy for given values of the calculated resistances of the material compo-nents. This formulation of the problem leads to a global minimum of the covering volume. In particu-lar, an axisymmetrically loaded spherical cover is considered; the optimal thickness is determined from the condition of equal resistance by the von Mises yield criterion. Types of elements for precast glass-fiber concrete of various spans are recommended. In addition, the shallow tunnels are consid-ered; they are a prevalent object of transport communications. The rationality of using the thin-walled spatial systems consisting of rectangular plates is established. The isoperimetric problem is solved for a given volume of material based on the generalized Lagrangian principles. The thickness of the rec-tangular plates of the spatial system of the tunnel is taken as a variable parameter.

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Xu, Xinsheng, Zhen Zhao, Wei Wang, Zhenzhen Tong, Zhenhuan Zhou, and C. W. Lim. "A novel design of thin-walled energy absorption structures with local surface nanocrystallization." Thin-Walled Structures 160 (March 2021): 107337. http://dx.doi.org/10.1016/j.tws.2020.107337.

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Auyesbayev, Y. T., and M. S. Kuralbek. "THE USE OF LIGHT STEEL THIN-WALLED STRUCTURES IN THE DESIGN OF LOW-RISE PREFABRICATED BUILDINGS." Bulletin of Kazakh Leading Academy of Architecture and Construction 83, no. 1 (January 15, 2022): 120–26. http://dx.doi.org/10.51488/1680-080x/2022.1-18.

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The article analyzes the experience of building modular technology in different countries, including the Republic of Kazakhstan. The advantages and disadvantages of using this technology are revealed with the subsequent determination of ways to optimize prefabricated block-modular construction.

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BRONIEWICZ, Mirosław, Sandra MLONEK, and Romuald SZELĄG. "Design of joints of thin sheet parts with mechanical connections (according to EN 1993-1-3)." Inżynieria Bezpieczeństwa Obiektów Antropogenicznych, no. 4 (December 5, 2021): 19–27. http://dx.doi.org/10.37105/iboa.121.

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The main direction of development of steel building structures is to reduce the cost of implementation of buildings without changing their load-bearing capacity and value in use. Therefore, an essential factor in the development is the introduction of modern technologies. Solutions from other industries such as automotive or aerospace, have been adapted to perform building structures. As a result, today in the construction industry we use lightweight steel profiles from cold-bent elements. Modern technology and advanced calculation theory make it possible to build these structures much more economically than previous conventional systems. Elements and products made of thin sheets allow to reduce costs of construction, but at the same time is associated with the possibility of defects resulting in the appearance of a state of failure of structural elements or the entire facility. Connection zones of thin-walled elements are always the critical points, hence the need for a particularly thorough assessment at the design stage, and then at the implementation of the investment. Correct application of the presented calculation procedure in article will allow the design and realization of modern structures, which will be durable and safe in operation for the expected period of time.

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MASHIRI, FIDELIS RUTENDO, XIAO-LING ZHAO, and PAUL GRUNDY. "STRESS CONCENTRATION FACTORS AND FATIGUE FAILURE OF WELDED T-CONNECTIONS IN CIRCULAR HOLLOW SECTIONS UNDER IN-PLANE BENDING." International Journal of Structural Stability and Dynamics 04, no. 03 (September 2004): 403–22. http://dx.doi.org/10.1142/s021945540400129x.

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The fatigue behavior of welded thin-walled T-joints made up of both circular hollow section (CHS) braces and chords, subjected to cyclic in-plane bending, is described in this paper. CHS chords and braces are of thicknesses less than 4 mm. Current fatigue design guidelines show that the design of welded tubular nodal joints is restricted to thicknesses greater than or equal to 4 mm. The increased availability and use of thin-walled (t<4 mm) tubes of high-strength steels in recent years, in structures subjected to cyclic loading, means that it is important to study the fatigue behavior of welded thin-walled tubular nodal joints. In this paper, welded thin-walled CHS-CHS T-joints subjected to constant-stress-amplitude cyclic in-plane bending range are studied. The stress concentration factors (SCFs) determined experimentally at the brace and chord crown positions are shown to be about 30% and 40% respectively of the SCFs determined using parametric equations in existing fatigue design guidelines. The fatigue tests showed that in welded thin-walled CHS-CHS T-joints, a through-thickness crack occurs when the surface crack length along the weld toes in the chord has grown to a length equal to about 40% of the circumference of the brace member. An end of test failure criterion was proposed as an alternative to the through-thickness failure criterion, in obtaining data that is suitable for determining fatigue design S-N curves.

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Li, Jiaqiang, Yao Chen, Xiaodong Feng, Jian Feng, and Pooya Sareh. "Computational Modeling and Energy Absorption Behavior of Thin-Walled Tubes with the Kresling Origami Pattern." Journal of the International Association for Shell and Spatial Structures 62, no. 2 (June 1, 2021): 71–81. http://dx.doi.org/10.20898/j.iass.2021.008.

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Origami structures have been widely used in various engineering fields due to their desirable properties such as geometric transformability and high specific energy absorption. Based on the Kresling origami pattern, this study proposes a type of thin-walled origami tube the structural configuration of which is found by a mixed-integer linear programming model. Using finite element analysis, a reasonable configuration of a thin-walled tube with the Kresling pattern is firstly analyzed. Then, the influences of different material properties, the rotation angle of the upper and lower sections of the tube unit, and cross-sectional shapes on the energy absorption behavior of the thin-walled tubes under axial compression are evaluated. The results show that the symmetric thin-walled tube with the Kresling pattern is a reasonable choice for energy absorption purposes. Compared with thin-walled prismatic tubes, the thin-walled tube with the Kresling pattern substantially reduces the initial peak force and the average crushing force, without significantly reducing its energy absorption capacity; moreover, it enters the plastic energy dissipation stage ahead of time, giving it a superior energy absorption performance. Besides, the material properties, rotation angle, and cross-sectional shape have considerable influences on its energy absorption performance. The results provide a basis for the application of the Kresling origami pattern in the design of thin-walled energy-absorbingstructures.

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Liu, Yucheng. "Crashworthiness design of multi-corner thin-walled columns." Thin-Walled Structures 46, no. 12 (December 2008): 1329–37. http://dx.doi.org/10.1016/j.tws.2008.04.003.

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Liu, Yisi, Xiaojun Wang, and Yunlong Li. "Distributed piezoelectric actuator layout-design for active vibration control of thin-walled smart structures." Thin-Walled Structures 147 (February 2020): 106530. http://dx.doi.org/10.1016/j.tws.2019.106530.

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Oh, Jae Yuel, Deuck Hang Lee, Jungmin Lee, Kang Su Kim, and Sung-Bae Kim. "Experimental Study on Reinforced Concrete Column Incased in Prefabricated Permanent Thin-Walled Steel Form." Advances in Materials Science and Engineering 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/3806549.

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Conventional construction methods of reinforced concrete (RC) structures generally require a long construction period and high costs due to many on-site temporary form works. In this study, a prefabricated permanent thin-walled steel form integrated with reinforcement cage (PPSFRC) was developed, and it makes for a fast-built construction by reducing the temporary form works. Axial compression tests were conducted on a total of 9 test specimens to investigate the structural performances of the newly developed columns. The proposed column construction method utilized relatively thinner steel plates compared to conventional concrete-filled tube (CFT) columns, but it was designed to have sufficient resistance performances against the lateral pressure of fresh concrete and to prevent the buckling of the thin plates by utilizing the steel angles and channel stiffeners prefabricated in the permanent thin-walled steel form. The experimental results showed that the column specimens fabricated by the PPSFRC method had better local buckling resistance and behaved in a more ductile manner compared to the conventional CFT columns. In addition, the axial strengths of the test specimens were compared with those estimated by design provisions, and the flexural moments induced by initial imperfection or accidental eccentricity of axial loads were also discussed in detail.

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Sridharan, Srinivasan, and M. Ashraf Ali. "Behavior and Design of Thin‐Walled Columns." Journal of Structural Engineering 114, no. 1 (January 1988): 103–20. http://dx.doi.org/10.1061/(asce)0733-9445(1988)114:1(103).

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MASHIRI, FIDELIS RUTENDO, XIAO-LING ZHAO, MANFRED A. HIRT, and ALAIN NUSSBAUMER. "SIZE EFFECT OF WELDED THIN-WALLED TUBULAR JOINTS." International Journal of Structural Stability and Dynamics 07, no. 01 (March 2007): 101–27. http://dx.doi.org/10.1142/s0219455407002228.

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This paper clarifies the terminologies used to describe the size effect on fatigue behavior of welded joints. It summarizes the existing research on size effect in the perspective of newly defined terminologies. It identifies knowledge gaps in designing tubular joints using the hot spot stress method, i.e. thin-walled tubular joints with wall thickness less than 4 mm and thick-walled tubular joints with wall thickness larger than 50 mm, or diameter to thickness ratio less than 24. It is the thin-walled tubular joints that are addressed in this paper. It is found that thin-walled tube-plate T-joints do not follow the conventional trend: the thinner the section is, the higher the fatigue life. It is also found that simple extrapolation of existing fatigue design curves may result in unsafe design of thin-walled tube–tube T-joints. The effect of chord stiffness on fatigue behavior of thin-walled tubular T-joints is also discussed.

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Dar, M. Adil, Deepankar K. Ashish, and A. R. Dar. "Theoretical design of innovative cold formed steel beam sections." International Journal of Scientific World 3, no. 2 (September 20, 2015): 255. http://dx.doi.org/10.14419/ijsw.v3i2.4366.

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<p>In today’s world, the construction industry both structural and non-structural elements are fabricated from thin gauges of steel sheets. These thin walled sections are being used as columns, beams, joists, studs, floor decking, built-up sections and other components for lightly loaded structures. Unlike hot rolled sections, the design of Cold-Formed Steel (CFS) section for beam is predominantly controlled by various buckling modes of failure, thereby drastically reducing their load carrying capacity. Hence there is an urgent need in the CFS industry to look beyond the conventional CFS beam sections and investigate newly proposed innovative CFS beam sections, which seem to prove structurally much more efficient. Prior to any experimental investigation of innovative beam sections, there is a need to carry out theoretical design using some of the most appropriate available methods applicable to the case under consideration. This paper focuses on such theoretical designs for various innovative sections using available analytical design tools together with appropriate codal guidelines.</p>

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Wang, Yunyang, Liqing Zhang, Yandong Jia, and Li Li. "Experimental Study on Self-Compacting Concrete-Filled Thin-Walled Steel Tube Columns." Buildings 12, no. 12 (December 5, 2022): 2134. http://dx.doi.org/10.3390/buildings12122134.

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Concrete-filled steel tubes present excellent structural and constructional performances because they ideally combine the advantage of concrete and steel tube. Thus, they are widely used in civil infrastructures. However, they inevitably suffer from either hard compacting or high costs. Thus, convenient and rapid construction for compacting concrete and cost saving are the urgent challenges for concrete-filled steel tubes. Therefore, this study investigates filling a thin-walled steel tube with self-compacting concrete to solve the challenges presented by traditional concrete-filled steel tube columns, such as poor compacting performance and high costs. This experimental study tests self-compacting concrete-filled thin-walled steel tube (SCCFTST) columns under concentric compression from loading to failure. Effects of wall thickness of the thin-walled steel tube on the failure modes, load-deformation behaviors, and the ultimate loads of the SCCFTST columns are comprehensively investigated. The ultimate loads between experiments and their calculated values in terms of design codes are also compared. The results suggest that buckling on thin-walled steel tube surface is the typical failure mode. The amount of local buckling increases with decreasing wall thickness, and the decreasing rate of the load-deformation curves in the descending branch decreases by increasing the wall thickness, as well as the ultimate load increasing with increases wall thickness. The ACI and CECS are the most conservative and accurate design codes, respectively, for predicting the ultimate load. Therefore, the SCCFTST columns can be used as structural components in civil infrastructures and their peak loads can be calculated using design codes for conventional concrete-filled steel tube columns. However, modification measures must be taken while predicting the ultimate loads of the SCCFTST columns by design codes. The experimental results of this paper can contribute towards the application of SCCFTST columns in practice.

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Prabowo, Aditya Rio, Tuswan Tuswan, Dandun Mahesa Prabowoputra, and Ridwan Ridwan. "Deformation of designed steel plates: An optimisation of the side hull structure using the finite element approach." Open Engineering 11, no. 1 (January 1, 2021): 1034–47. http://dx.doi.org/10.1515/eng-2021-0104.

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Abstract Thin-walled structures, which generally consist of unstiffened and stiffened plates, are widely used in engineering as one of the core features of any product or construction. Due to environmental conditions and working operation, the components of the structure unavoidably become subject to various types of loading. Deformation patterns and overall behaviour are expected to be varied, as different materials are considered in the structures. In this situation, assessments are required to quantify the responses and determine the relationships between the structural behaviour and structural parameters. In this work, we attempt to obtain the behaviour data of unstiffened and stiffened plates as components of thin-walled structures. The material class – i.e. low- and medium-carbon steels – and loading parameters (i.e. type and angle) are taken as the main inputs in the finite element analysis. A geometrical design is adopted based on the side hull structure of a medium-sized tanker, for which two plate types, unstiffened and stiffened, are used. The results indicate that increasing the loading angle reduces the force experienced by the plate, while the greater the loading direction angle is, the greater the total displacement value will be. In terms of the plate design, the stiffener is observed to reduce the force expansion during the loading of the stiffened plate.

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Xu, Xiang, Gaoxiang Xu, Jiawei Chen, Zhe Liu, Xinbo Chen, Yong Zhang, Jianguang Fang, and Yunkai Gao. "Multi-objective design optimization using hybrid search algorithms with interval uncertainty for thin-walled structures." Thin-Walled Structures 175 (June 2022): 109218. http://dx.doi.org/10.1016/j.tws.2022.109218.

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Anamova, R. R., S. A. Leonova, T. M. Khvesyuk, and G. K. Khotina. "SHEET CONSTRUCTION AIRCRAFT COMPONENTS DRAWINGS." Spravochnik. Inzhenernyi zhurnal, no. 301 (April 2022): 39–45. http://dx.doi.org/10.14489/hb.2022.04.pp.039-045.

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The article describes the methodology of teaching the rules for the image of aviation products made of sheet material obtained by cutting, bending, drawing, etc. These rules, according to the graduate's competence model, are necessary for students to study design specialties of aviation universities. The proposed methodology implies the study of these rules in the framework of performing specialized graphic work in the discipline “Engineering Graphics”. The methodology includes a description of the structural elements of sheet parts and the features of their image in the drawings. Special attention when teaching this topic should be paid to the requirements for maintaining the strength and rigidity of the structure with a minimum weight. These requirements make it necessary to introduce special elements into the design of parts, such as bending, flanging, rifts, etc., as well as the need to depict scans in the drawing in order to clarify the shape of the parts. The considered examples allow students to form practical skills and abilities for displaying products made of sheet material in drawings; to acquire skills for reading drawings of thin-walled aircraft structures; to deepen knowledge of the state ESKD standards for the development and design of drawings of metal structures; to develop technical thinking. The material was tested while teaching the discipline “Engineering Graphics” at the Moscow Aviation Institute (National Research University).

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Ciubotariu, Vlad Andrei. "Analysis of the Collapse Behaviour Regarding TWB Crash-Boxes in Conjunction with the Construction Technique." Applied Mechanics and Materials 657 (October 2014): 634–38. http://dx.doi.org/10.4028/www.scientific.net/amm.657.634.

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The crash-boxes are thin-walled structural components with rectangular cross-section which are utilized in the construction of the resistance body structures in the auto industry. This components can be manufactured from various materials including homogenous steel sheet metals, tailor welded blanks (TWB) or even composite materials. The benefits of using TWB were shown in numerous studies before and they are not the main purpose here.This research focuses on the collapse behaviour of TWB thin-walled structures with rectangular cross-section subject of impact loadings. The main objective is to design a crash-box which allows the absorption and dissipation of great kinetic energy constituting better resistance structures for car bodies.After analysing the resulted data, a few aspects regarding the TWB crash-boxes were revealed and some conclusions could be suggested: the weld line generates a barrier like zone which delays in some manner the propagation of the progressive buckling levelling the mean crash load; no flange crash-boxes presented best results regarding the mean crash load even if the data were very close to the other crash-box types. Furthermore, the peak crash load was at maximum level comparing with the other crash-box types. This collapsing behaviour of the no flange crash-boxes could be assigned to the fact that the bonded sides of the structure work like double walls into the same cress-section and is not really affecting the asymmetric crash mode of the structure.

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Matulewicz, Z., and C. Szymczak. "Optimal design of thin-walled I beams undergoing torsion." Thin-Walled Structures 3, no. 2 (January 1985): 135–44. http://dx.doi.org/10.1016/0263-8231(85)90029-1.

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Andriichuk, О. V., and S. O. Uzhehov. "THE FRACTURE TOUGHNESS OF THIN-WALLED COVER SHELLS HYPERBOLIC PARABOLOID SHAPED OF FERROCEMENT AND STEEL FIBER CONCRETE UNDER THE ACTION OF OPERATING LOADS." Ресурсоекономні матеріали, конструкції, будівлі та споруди, no. 37 (January 30, 2020): 89–96. http://dx.doi.org/10.31713/budres.v0i37.334.

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Experimental research of new materials and structures with improved parameters of strength, fracture toughness, bearing capacity and their lifetime in comparison with typical elements is an actual problem of building science.Nowadays there is a trend to design and use for buildings covering the new design solutions as the thin shells. One of the types of thin shells are Gaussian shells with negative curvature. It’s worth to note that in the last decade, a considerable number of researches of thin-walled structures made of steel fiber reinforced concrete were conducted, which confirmed the efficiency of its use to enhance their hardness, fracture toughness and thus longer life.The article presents the results of the authors’ experimental studies of fracture toughness of thin-walled cover structures with Gaussian negative curvature in the shape of hyperbolic paraboloid made of ferrocement and steel fiber reinforced concrete under the action of the operating load.The load application was carried out for ten steps, after each step the pause was for 15...20 min, during which the data of the strain-gauge station VNP-8 was recorded, using a microscope were measured and recorded the width of the cracks, deflections of the structure were measured etc.The external force was evenly-distributed to its applications and the impact was simulated according to the real conditions of construction use.The experimental part of the research was conducted at the laboratory of building materials and structures of Lutsk National Technical University. In scientific work carried out mapping and comparison of the obtained experimental results, carried out processing and analysis, presents the conclusions.During the researches it was found that the fracture toughness of thin-walled shell cover with Gaussian negative curvature in the shape of a hyperbolic paraboloid with dispersed reinforcement (steel fiber reinforced concrete) is higher than in the shell made of ferrocement. Accordingly, it can be argued about the increasing of the lifetime of steel fiber reinforced concrete shell covering in comparison with the ferrocement shell.

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Librescu, Liviu, and Ohseop Song. "Behavior of Thin-Walled Beams Made of Advanced Composite Materials and Incorporating Non-Classical Effects." Applied Mechanics Reviews 44, no. 11S (November 1, 1991): S174—S180. http://dx.doi.org/10.1115/1.3121352.

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Several results concerning the refined theory of thin-walled beams of arbitrary closed cross-section incorporating non-classical effects are presented. These effects are related both with the exotic properties characterizing the advanced composite material structures and the non-uniform torsional model. A special case of the general equations is used to study several problems of cantilevered thin-walled beams and to assess the influence of the incorporated effects. The results presented in this paper could be useful towards a more rational design of aeronautical or aerospace constructions, as well as of helicopter or tilt rotor blades constructed of advanced composite materials.

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Perelmuter, Anatolii. "To the calculation of steel structures from thin-walled rods." Strength of Materials and Theory of Structures, no. 108 (May 30, 2022): 119–30. http://dx.doi.org/10.32347/2410-2547.2022.108.119-130.

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The article contains a brief historical essay on the main ideas for calculating systems composed of thin-walled rods of open profile. The main approaches to the calculation of these systems taking into account the inequality of nodal deplanations are analyzed. It is proposed to use the finite element method using thin finite rods and specially constructed superelements as finite elements, which take into account the participation of nodal joints. The stiffness matrix of a thin-walled rod of the 14th order, built on the basis of the classical Vlasov's non-slip theory for open-profile rods, when the cross-sectional displacement is taken into account. Nodal superelements consist of shell finite elements and have m deplanation degrees of freedom according to the number of rods that approach the node. With the help of the matrix of stiffness of the nodal superelement, the connection between the deplanai, which affect the node, and the reactive forces, which have the form of bimoments realized. The method of construction of the node stiffness matrix is indicated, which is based on the use of infinitely rigid bodies, displacements and rotations of which allow to simulate the influence of deplanations on the node. The peculiarities of the assembly operation in the presence of nodal superelements are indicated. Possible variants of inclusion of the considered technique in software complexes for calculation of building designs are specified.

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Yan, Weiming, Tingting Mu, Zhiqiang Xie, and Cheng Yu. "Experimental investigation of typical connections for fabricated cold-formed steel structures." Advances in Structural Engineering 22, no. 1 (June 13, 2018): 141–55. http://dx.doi.org/10.1177/1369433218781901.

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This article presents a comparative investigation on mechanical behavior and construction characteristics of some typical connections in cold-formed thin-walled steel. The lap shear tests of 96 specimens considering four typical connections with a self-piercing rivet, clinching, self-drilling screw, and blind rivet were conducted. The effects of sheet thickness and thickness ratio on failure modes and mechanical behavior of the four types of connections were investigated. Through analyzing the feasibility of mechanic and construction, the applicability of the four types of connections in fabricated cold-formed steel structures was comprehensively evaluated. The result of the research shows that compared with the other three connections, self-piercing rivet connections are more suitable for modularly fabricated cold-formed steel structures because of its superior mechanical properties, well-formed quality, high efficiency, and potential industrialization. Based on the design methods of fasteners in North American (AISI S100-16) and European standards (prEN1999-1-4) on cold-formed steel structures, an appropriate design method is proposed for self-piercing riveting connections.

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Asadi Khanouki, Mostafa, Mohammad Hossein Javadi Aghdam, and Farjad Shadmehri. "Comment on “Aeroelastic design optimization of thin-walled subsonic wings against divergence” [Thin-Walled Struct., 47 (2008) 89–97]." Thin-Walled Structures 137 (April 2019): 433–35. http://dx.doi.org/10.1016/j.tws.2019.01.001.

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Tian, Sumei, Meng Wang, and Wuchao Qi. "Effects of Elastically Supported Boundaries on Flutter Characteristics of Thin-Walled Panels." Energies 15, no. 19 (September 27, 2022): 7088. http://dx.doi.org/10.3390/en15197088.

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In order to investigate flutter characteristics of thin-walled panels with elastically supported boundaries, a method for dealing with the stiffness matrix constraint relationship is developed based on penalty functions. Combined with the first-order piston theory, flutter velocities and frequencies of thin-walled panels with the different cases of elastically supported boundaries are calculated. Firstly, a thin-walled panel is discretized by the finite element method, and springs with real stiffness coefficients are introduced to simulate elastically supported boundaries. Then, the pressure difference between the outer and inner surfaces of the panel and modal aerodynamic expressions are obtained by introducing the first-order piston theory. Finally, flutter equations are obtained in the time domain by combining the structural dynamic equations with the modal aerodynamic forces. Subsequently, they are transformed to the frequency domain at the flutter state. Then, flutter characteristics of the panel are obtained using the U−g method. The results show that the existence of elastically supported boundaries may reduce the flutter velocity and flutter frequency of the panel but can be enhanced and recovered through some appropriate damping configuration schemes. Calculating the flutter characteristics of thin-walled panels under elastically supported boundaries can more accurately simulate real supported situations and result in a safer design scheme for thin-walled panel structures.

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Journal articles on the topic 'Thin-walled structures Design and construction'

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