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Статті в журналах з теми "Thin-walled engineering structure"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 липня 2025

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1

Zhao, Xiao-Ling. "Thin-walled structure." Thin-Walled Structures 47, no. 10 (2009): 1019. http://dx.doi.org/10.1016/j.tws.2008.10.005.

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2

Zhou, Hui, Ping Xu, and Suchao Xie. "Composite energy-absorbing structures combining thin-walled metal and honeycomb structures." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 231, no. 4 (2016): 394–405. http://dx.doi.org/10.1177/0954409716631579.

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The energy-absorbing structure of a crashworthy railway vehicle was designed by combining the characteristics of thin-walled metal structures and aluminum honeycomb structures: finite element models of collisions involving energy-absorbing structures were built in ANSYS/LS-DYNA. In these models, the thin-walled metal structure was modeled as a plastic kinematic hardening material, and the honeycomb structure was modeled as an equivalent solid model with orthotropic–anisotropic mechanical properties. The analysis showed that the safe velocity standard for rail vehicle collisions was improved fr

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3

Luo, Zhong, You Wang, Yunpeng Zhu, and Deyou Wang. "The Dynamic Similitude Design Method of Thin Walled Structures and Experimental Validation." Shock and Vibration 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/6836183.

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For the applicability of dynamic similitude models of thin walled structures, such as engine blades, turbine discs, and cylindrical shells, the dynamic similitude design of typical thin walled structures is investigated. The governing equation of typical thin walled structures is firstly unified, which guides to establishing dynamic scaling laws of typical thin walled structures. Based on the governing equation, geometrically complete scaling law of the typical thin walled structure is derived. In order to determine accurate distorted scaling laws of typical thin walled structures, three princ

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4

Chizhov, Sergey, Nikolay Solov'ev, and Yuliya Avdey. "The Performance of the Span Main Beam Made of Thin-Walled Steel Sections Subjected to Pedestrian Load." Proceedings of Petersburg Transport University 22, no. 2 (2025): 531–44. https://doi.org/10.20295/1815-588x-2025-2-531-544.

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Purpose: To investigate the potential application of cold-formed thin-walled steel sections in bridge construction. To review the existing calculation methods for thin-walled structures in national and international regulatory documents. To analyse the strength and deformation characteristics of the designed structure. To consider the possibility of adjusting the generally accepted calculation methodology and regulatory requirements. To provide substantiated evidence regarding the feasibility of using cold-formed thin-walled sections in the construction of bridges. Methods: Mathematical and fi

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5

Shimoda, Masatoshi, and Yang Liu. "Free-Form Optimization of Thin-Walled Structure for Frequency Response Problem." Shock and Vibration 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/471646.

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We present a node-based free-form optimization method for designing forms of thin-walled structures in order to control vibration displacements or mode at a prescribed frequency. A squared displacement error norm is introduced at the prescribed surface as the objective functional to control the vibration displacements to target values in a frequency response problem. It is assumed that the thin-walled structure is varied in the normal direction to the surface and the thickness is constant. A nonparametric shape optimization problem is formulated, and the shape gradient function is theoreticall

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6

Ciubotariu, Vlad Andrei. "Crashing Behaviour Analysis of TWB Tubular Structures with Different Cross-Sections." Advanced Materials Research 814 (September 2013): 159–64. http://dx.doi.org/10.4028/www.scientific.net/amr.814.159.

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The present paper investigates the crashing behavior and energy absorption characteristics of thin-walled (tubular) structures with different cross-sections made from tailor welded blanks (TWB) which were subject of axial quasistatic loadings. Resulted data were obtained by using explicit nonlinear finite element code LS_Dyna V971. Implementing the TWB into the auto industry was an efficient method to decrease the general weight of different structures. By far, these kind of bimetallic structures are largely utilized in auto and naval industries because it led to important decrease of scarp qu

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7

Kreja, Ireneusz, Tomasz Mikulski, and Czeslaw Szymczak. "ADJOINT APPROACH SENSITIVITY ANALYSIS OF THIN‐WALLED BEAMS AND FRAMES." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 11, no. 1 (2005): 57–64. http://dx.doi.org/10.3846/13923730.2005.9636333.

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Sensitivity analysis of beams and frames assembled of thin‐walled members is presented within the adjoint approach. Static loads and structures composed of thin‐walled members with the bisymmetrical open cross‐section are considered. The analysed structure is represented by the one‐dimensional model consisting of thin‐walled beam elements based on the classical assumptions of the theory of thin‐walled beams of non‐deformable cross‐section together with superelements applied in place of location of structure nodes, restraints and stiffeners. The results of sensitivity analysis, obtained for the

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8

Yang, Li Feng, Yang Shi, and Wei Na Liu. "The Study of Thin-Walled Complex Parts Reverse Engineering Key Technologies." Advanced Materials Research 500 (April 2012): 511–16. http://dx.doi.org/10.4028/www.scientific.net/amr.500.511.

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The thin-walled complex parts reverse engineering is very different from conventional parts or the parts have some simple surface reverse engineering. There are some features. For example, it may have a lot of surface, structure complex, and it is difficulty that scanning point cloud data. Through this thesis, we put a stent by pedal as a thin-walled complex part, introduced some technology about it reverse engineering.

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9

Xu, Shu-Cai, Nuo Chen, Hao-Yi Qin, Rui-Xiang Wang, Xin Yang, and Jia-Feng Song. "Research on Impact Resistance of Aluminum Alloy New Rotating Thin-Walled Structures." Biomimetics 8, no. 8 (2023): 590. http://dx.doi.org/10.3390/biomimetics8080590.

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Honeycomb structures are widely used in the field of impact resistance and are constantly being developed and updated. In this paper, the design of three new aluminum alloy rotating thin-walled structures (NRTS) are examined. These structures combine common concave structures and rotating, rigid-body structures. The purpose of this study is to solve the problem of the poor energy absorption capacity of rotating, rigid-body structure due to small deformation and to provide a reference for honeycomb mechanism designs. The Young’s modulus, the critical velocity, and the platform stress of the NRT

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10

Kneen, P. W. "Prestressed membrane structures — The ultimate thin-walled structure." Thin-Walled Structures 9, no. 1-4 (1990): 135–49. http://dx.doi.org/10.1016/0263-8231(90)90042-w.

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11

Li, Zhichao, Subhash Rakheja, and Wen-Bin Shangguan. "Crushing behavior and crashworthiness optimization of multi-cell square tubes under multiple loading angles." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 5 (2019): 1497–511. http://dx.doi.org/10.1177/0954407019869127.

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Thin-walled structures are widely used as energy absorbers in automotive vehicles due to their lightweight and high-energy absorption efficiency. In order to improve the energy absorption characteristics of thin-walled structures subjected to different loading angles, different types of novel multi-cell structures are proposed in this paper. The numerical method is used to study the crushing behaviors of the proposed multi-cell structures under different loading angles. It is found that the proposed multi-cell structures have considerably small initial peak force under axial load and avoid the

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12

Sha, Yundong, Wenqiang Zhao, Xiaoning Tang, and Fengtong Zhao. "Acoustic and Vibration Response and Fatigue Life Analysis of Thin-Walled Connection Structures under Heat Flow Conditions." Aerospace 11, no. 4 (2024): 287. http://dx.doi.org/10.3390/aerospace11040287.

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Thin-walled connection structures are commonly used in the hot-end components of aerospace vehicles. Large deflection nonlinear responses and fatigue failure occur due to their discontinuous mass distribution and prominent cross-sectional changes under the action of complex thermal, aerodynamic, and noise loads. A thermoacoustic fatigue test was carried out to obtain the acoustic and vibration responses and fatigue life changes of the connection structure under heat flow conditions in engineering applications. The high-temperature acoustic fatigue test system of aviation thin-walled structures

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13

Liu, Yang, Shixi Guan, Hong Zhao, Waner Liu, Liancheng Duan, and Yedian Sha. "Evolutionary Design of Machining Fixture Layout for Thin-Walled Structure." Mathematical Problems in Engineering 2022 (October 26, 2022): 1–15. http://dx.doi.org/10.1155/2022/5216966.

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Fixture layout for machining thin-walled structures plays an important role in fixture performance. This work focuses on the optimization design of machining fixture layout including clamp layout and the layout of support heads. A universal optimization methodology that can automatically generate the optimal machining fixture layout is proposed. The optimization of fixture layout is implemented based on the criteria of minimizing maximum deflection of the thin-walled workpiece while remain relatively small torque caused by the clamping tables. An evolutionary algorithm is employed to solve the

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14

Chen, De Zhi, and Shun Xiang Xu. "Research and Engineering Application of Wall-Outside Blasting Charge in Blasting Demolition of Underground Thin-Walled Structure." Advanced Materials Research 739 (August 2013): 314–17. http://dx.doi.org/10.4028/www.scientific.net/amr.739.314.

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When the blasting method is used to demolish the underground thin-walled structure, the safety misadventure occurs possibly due to the small burden, the heavy workload of the drilling and excavation as well as the long construction time, thus, its demolition is more difficult than that of the foundation. This paper describes the new underground thin-walled structure blasting demolition method - the wall-outside blasting charge method and the primary discussion about the blasting mechanism of the wall-outside blasting charge method, which is used in engineering practice. The demolition practice

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15

Оробей, В., О. Ковра, С. Чабан, Д. Пуріч та Н. Арцибашева. "ЗАСТОСУВАННЯ МЕТОДУ ГРАНИЧНИХ ЕЛЕМЕНТІВ ДЛЯ РОЗРАХУНКУ НАПРУЖЕНО-ДЕФОРМОВАНОГО СТАНУ ПРИ КРУЧЕННІ ТОНКОСТІННИХ РАМ АВТОМОБІЛІВ". Collection of scientific works of Odesa Military Academy, № 19 (30 червня 2023): 140–52. http://dx.doi.org/10.37129/2313-7509.2023.19.140-152.

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Currently, the main method of calculating the stress-strain state (SSS) is the finite element method (FEM), implemented in software packages such as ANSYS, Solid Works, MATLAB, and others. It is established that if the SSS structure is described by rod functions, then the finite element method gives accurate results. If the state of the object is described by other functions, then MSE can give only approximate results of SSS calculation. Therefore, in this work, the authors applied a more accurate method of calculating the SSS of thin-walled car frames – the numerical analytical method of boun

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16

Rosmanit, Miroslav, Přemysl Pařenica, Oldřich Sucharda, and Petr Lehner. "Physical Tests of Alternative Connections of Different High Roof Purlins Regarding Upward Loading." Buildings 11, no. 11 (2021): 512. http://dx.doi.org/10.3390/buildings11110512.

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Thin-walled cold-rolled sections are used in the construction industry, especially in the roofing of large-span halls. The load-bearing capacity of a thin-walled structure depends to a large extent on the load-bearing capacity of the details at the point of attachment to the structure and the interconnection of the individual thin-walled elements. Therefore, in the case of thin-walled structures, it is necessary to use additional structural elements such as local reinforcement, stabilising elements, supports, and other structural measures such as the doubling of profiles. This paper focused on

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17

Pan, Futing, Ying Wang, and Chunxiao Huang. "Design and bearing capacity analysis of cold-formed thin-walled steel-timber composite members." E3S Web of Conferences 248 (2021): 03047. http://dx.doi.org/10.1051/e3sconf/202124803047.

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Cold-formed thin-walled steel has light weight, large width thickness ratio, good economy and seismic performance. It is easy to realize standardization of design, and is very suitable for the development of prefabricated buildings. Due to the large width thickness ratio of cold-formed thin-walled steel , the steel plate is prone to local buckling when it is compressed, which will reduce the ductility and bearing capacity of the structure, which also leads to the limitation of the use of cold-formed thin-walled steel structure system in medium and high-rise buildings. In this paper, a kind of

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18

Yuan, Bao Long, Zi Dong Wang, Xiang Ming Li, and Chun Jing Wu. "Preparation and Properties of Thin Walled Copper Tube by a Short Process Method." Advanced Materials Research 148-149 (October 2010): 732–35. http://dx.doi.org/10.4028/www.scientific.net/amr.148-149.732.

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Thin walled copper tube is prepared in vacuum melting and argon protecting continuous unidirectional solidification equipment by a short process method. The size of the thin walled copper tube is ф39×1.8 mm. The effect of process parameters on the solidification structure and the surface quality of the thin walled copper tube is investigated. The mechanical properties and electrical properties are tested and analyzed. The results show that the thin walled tube with columnar crystal structure and good quality surface can be obtained continuously and stably under the most appropriate process of

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19

Wang, Qing Chun, Hao Long Niu, Guo Quan Wang, and Yu Xin Wang. "Numerical Simulation on Bending Characteristics of Aluminium Foam Filled Thin-Walled Tubes." Advanced Materials Research 213 (February 2011): 88–92. http://dx.doi.org/10.4028/www.scientific.net/amr.213.88.

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Different aluminum foam filling lengths were used to increase the bending energy absorbing capacity of the popularly used hat sections. Bending energy-absorption performance of the thin-walled tubes was numerically studied by explicit non-linear software LS-Dyna. First empty hat section subjected to quasi-static bending crushing was simulated, then structures with different aluminium foam filling lengths were calculated, finally energy absorption capacity of these structures were compared. Calculation results showed that, the internal energy absorbed and mass specific energy absorption capacit

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20

Peng, Jiahao, Shijie Liu, Dong Wang, et al. "Design and Optimization of Thin-Walled Main Support Structure for Space Camera Based on Additive Manufacturing." Micromachines 15, no. 2 (2024): 211. http://dx.doi.org/10.3390/mi15020211.

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In order to solve the design requirements of high stiffness and lightweight for the primary support structure of a wide-field auroral imager, we propose a solution for designing and optimizing a large-scale complex thin-walled structure using additive manufacturing. Firstly, we devise an integrated thin-walled structure and test material for the main support. Secondly, shape optimization is achieved via the optimization of the lateral slope angle of the primary support based on Timoshenko cantilever beam theory. Additionally, an active fitting optimization algorithm is proposed for the purpose

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21

Bin Kamarudin, Mohamad Norfaieqwan, Jaffar Syed Mohamed Ali, Abdul Aabid, and Yasser E. Ibrahim. "Buckling Analysis of a Thin-Walled Structure Using Finite Element Method and Design of Experiments." Aerospace 9, no. 10 (2022): 541. http://dx.doi.org/10.3390/aerospace9100541.

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In structural engineering, thin-walled structures play an important role in the design of the lightweight structural model. It carries different loading conditions when it exists in any model, and it is designed with thin plates or thin shells. Penetrating thin-walled structures with different kinds of holes can decrease their weight and facilitate repair and maintenance operations, such as those carried out for the wing of an airplane. In such applications, cutouts are often employed as part of the design of composite plates. Therefore, this paper attempted to design and analyse the thin-wall

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22

Kreja, Ireneusz, Tomasz Mikulski, and Czeslaw Szymczak. "APPLICATION OF SUPERELEMENTS IN STATIC ANALYSIS OF THIN‐WALLED STRUCTURES." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 10, no. 2 (2004): 113–22. http://dx.doi.org/10.3846/13923730.2004.9636295.

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A concept of a beam superelement is suggested as a new tool in the static analysis of structures made of thin‐walled members. This proposal seems to be especially attractive for treating the problems where the existing one‐dimensional models do not provide proper solutions. This class of problems includes, for instance, the torsion of thin‐walled beams with battens and the determination of the bimoment distribution at the nodes of frames made of thin‐walled members. The entire segment of the thin‐walled beam with warping stiffener or the whole node of the frame is modelled with shell elements.

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23

Xu, Fengxiang, Suo Zhang, and Kunying Wu. "Dynamic crashing behavior of thin-walled conical tubular structures with nonlinearly-graded diameters." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 7 (2018): 2456–66. http://dx.doi.org/10.1177/0954406218784609.

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Thin-walled structures with graded property have been paid more attention in recent years due to their significant balance between lightweight and crashworthiness. However, few studies have been focused on energy absorption capacity of thin-walled conical tubes with graded diameters. In this paper, the thin-walled conical aluminum tubes with nonlinearly-graded diameters are introduced and their corresponding crashing characteristics are performed. The diameters are assumed to nonlinearly vary according to a power-law distribution function primarily determined by a graded exponent n. It is foun

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24

Marur, P. R. "Analysis of thin-walled frames considering joint flexibilities." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 221, no. 10 (2007): 1221–29. http://dx.doi.org/10.1243/09544070jauto575.

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TAnalytical models are developed for static and dynamic analysis of thin-walled frames representing the automotive side structures. The model is based on one-dimensional beam theory that considers joint flexibility to compute stiffness and frequency response of the whole frame structure. The computed out-of-plane displacements under static and impact loading are in good agreement with those obtained from the shell finite element method. Using the validated analytical model, the influence of joint flexibility on the elastic response of the side structure is studied.

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25

Zalipaev, V. V., I. S. Jones, and A. B. Movchan. "A thermoelastic junction problem in a thin-walled structure: asymptotic analysis." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 465, no. 2104 (2009): 1309–21. http://dx.doi.org/10.1098/rspa.2008.0451.

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The two-dimensional model for a thin-walled structure in the plane strain time-harmonic case is discussed. A model of a surface crack defect subjected to oscillatory thermal loading in the middle part of the thin-walled bridges is presented. As a first part of the asymptotic model, the effective transmission condition in the vicinity of a deep surface-breaking crack in a thin-walled bridge is discussed. Then, the two-term boundary layer model determining the asymptotic behaviour of the field near the tip of the crack is constructed.

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26

Meng, Zhuo, Qin Sun, and Jin Feng Jiang. "Parameter Inversion of Thin-Walled Structure Using Numerical Optimization Approach." Advanced Materials Research 308-310 (August 2011): 1614–18. http://dx.doi.org/10.4028/www.scientific.net/amr.308-310.1614.

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Based on the theory of structure impact dynamic and numerical optimization, application of SQP algorithm in nonlinear parameter inversion is demonstrated in this paper by combining the optimization software and finite element software. Parameter inversion of thin-walled cylinder subjected to axial impact load is studied. The material parameters of thin-walled cylinder are obtained from inversion; besides, the whole process of numerical optimization parameter inversed method is demonstrated.

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27

Wang, Qianni, Caifu Qian, and Zhiwei Wu. "Research on the Rational Design Method of Strength Reinforcement for Thin-Walled Structure Based on Limit Load Analysis." Applied Sciences 12, no. 4 (2022): 2208. http://dx.doi.org/10.3390/app12042208.

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Thin-walled structures subjected to internal or external pressure usually need to be reinforced with ribs. The design of ribs is generally based on experiences in engineering, and the results are often very conservative. In this paper, an approach for the rational design of reinforced ribs on thin-walled structures is proposed based on the limit load analysis method, maximizing the limit load of the reinforced thin-walled structure or minimizing the weight of the reinforced ribs. Firstly, the limit load numerical analysis was conducted to study rib forms at the continuous and discontinuous reg

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28

Chen, Bing Zhi, Zhi Dong Lv, Su Ming Xie, and Wen Zhong Zhao. "Anti-Crashing Energy-Absorbing Simulation and Optimization of Thin-Walled Components." Advanced Materials Research 201-203 (February 2011): 347–55. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.347.

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Higher speed and loading capacity of trains nowadays have aroused higher ability of crashworthiness, which could be effectively improved by well-designed energy absorbing structures. The thin-walled components, the most traditional and effective energy absorbing device, have been widely used for design of energy absorbing device. As a result, the thin-walled components are used as an example to examine the process of axial compression of it. A comparison of a dynamic compressing simulation on fold-collapse tube and the experimental result of it is made, which shows the two matches very well. B

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29

Wang, Chun, Xuan Ming Zhang, and Chun Ying Tang. "Manufacturing Process of Large Scale Sandwich Structure with Variable Thickness of PMI Foam Core." Advanced Materials Research 299-300 (July 2011): 816–19. http://dx.doi.org/10.4028/www.scientific.net/amr.299-300.816.

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Composite sandwich structures are extensively used in the aerospace, wind power, sports equipment, shipbuilding, automotive and train locomotive industries in order to improve structure rigidity and reduce weight. The molding process of sandwich structure using glass cloth and fibre materials as panels has been reported in many literatures. However, few researches are found relative to the molding process of large scale sandwich structure with the characteristics of thin-walled aluminum alloy panels and variable thickness of Polymethacrylimide (PMI) foam cores. This paper describes a preformed

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30

Dabasa, T., H. G. Lemu, and Y. Regassa. "Literature review on thin-walled and cellular structure designs for energy absorption." IOP Conference Series: Materials Science and Engineering 1294, no. 1 (2023): 012046. http://dx.doi.org/10.1088/1757-899x/1294/1/012046.

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Abstract Bio-inspired structure is a topic of immense interest to researchers worldwide. In order to maximize energy absorption through biomimetic structures, this article presents bio-inspired structure particularly, thin walled and cellular structures thorough analysis of the interactions between experimental research and Finite Element Analysis (FEA) simulations. The study compiles the prior research on experimental investigations of thin-walled and cellular biomimetic structures in order to understand the significance of biomimetic structural energy absorption. These inventive works of nat

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31

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 (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

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32

Tao, Chenglin, Zhao Wang, Zeliang Liu, et al. "Crashworthiness of Additively Manufactured Lattice Reinforced Thin-Walled Tube Hybrid Structures." Aerospace 10, no. 6 (2023): 524. http://dx.doi.org/10.3390/aerospace10060524.

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In this paper, a new hybrid structure of body-centered cubic lattice-filled thin-walled tube is designed, and the hybrid structure specimens of one-piece printing and split-printing are prepared by laser melting technique. The deformation mode and energy absorption characteristics of the new hybrid structure are investigated by experiments and numerical simulations. Under axial compression, the one-piece printed hybrid structure forms more wrinkles with smaller wavelengths, and the specific energy absorption increases by 12.14% compared with the split-printed structure; under transverse compre

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33

Meshreki, Mouhab, Helmi Attia, and József Kövecses. "Modeling the Varying Dynamics of Thin-Walled Aerospace Structures for Fixture Design Using Genetic Algorithms." Advanced Materials Research 223 (April 2011): 652–61. http://dx.doi.org/10.4028/www.scientific.net/amr.223.652.

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Fixture design for milling of aerospace thin-walled structures is a challenging process due to the high ﬂexibility of the structure and the nonlinear interaction between the forces and the system dynamics. At the same time, the industry is aiming at achieving tight tolerances while maintaining a high level of productivity. Numerical models based on FEM have been developed to simulate the dynamics of thin-walled structures and the effect of the ﬁxture layout. These models require an extensive computational effort, which makes their use for optimization very unpractical. In this research work, a

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Wang, Chun, Xuan Ming Zhang, and Xiao Wang. "Scanning and Modeling of Large Thin-Walled Curved Surface Part." Advanced Materials Research 299-300 (July 2011): 810–15. http://dx.doi.org/10.4028/www.scientific.net/amr.299-300.810.

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The large sandwich structure composed of thin-walled aluminum alloy panels, and variable thickness of honeycomb or Polymethacrylimide (PMI) foam core is usually manufactured by pre-bonded forming process, that is pre-forming panels and sandwich core, and then curing adhesive them to be sandwich structure. Welding process of large thin-walled panel causes the panel surface to be irregular and have greater errors relative to the design surface. Simply CNC machining the sandwich core according to the design surface cannot guarantee an exact match sandwich core consistent with the panels. The actu

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35

Xing, D., W. Chen, J. Ma, and L. Zhao. "Structural bionic design for thin-walled cylindrical shell against buckling under axial compression." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 225, no. 11 (2011): 2619–27. http://dx.doi.org/10.1177/0954406211407820.

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In nature, bamboo develops an excellent structure to bear nature forces, and it is very helpful for designing thin-walled cylindrical shells with high load-bearing efficiency. In this article, the cross-section of bamboo is investigated, and the feature of the gradual distribution of vascular bundles in bamboo cross-section is outlined. Based on that, a structural bionic design for thin-walled cylindrical shells is presented, of which the manufacturability is also taken into consideration. The comparison between the bionic thin-walled cylindrical shell and a simple hollow one with the same wei

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Wu, Huifeng, Rui Dong, Qiwei Xu, Zheng Liu, and Lei Liang. "FOSS-Based Method for Thin-Walled Structure Deformation Perception and Shape Reconstruction." Micromachines 14, no. 4 (2023): 794. http://dx.doi.org/10.3390/mi14040794.

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To improve the accuracy of deformation perception and shape reconstruction of flexible thin-walled structures, this paper proposes a method based on the combination of FOSS (fiber optic sensor system) and machine learning. In this method, the sample collection of strain measurement and deformation change at each measuring point of the flexible thin-walled structure was completed by ANSYS finite element analysis. The outliers were removed by the OCSVM (one-class support vector machine) model, and the unique mapping relationship between the strain value and the deformation variables (three direc

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Xiao, Zhongmin, Longfei Wu, Dachang Zhu, Wenqiang Wu, Chunliang Zhang, and Fangyi Li. "Rib Reinforcement Bionic Topology Optimization under Multi-Scale Cyclic Excitation." Mathematics 11, no. 11 (2023): 2478. http://dx.doi.org/10.3390/math11112478.

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Thin-walled structures have problems such as low stiffness, large deflection, and vibration. The layout of rib reinforcement in thin-walled structures plays a vital role in providing structural strength and rigidity and reducing structural weight. A multi-scale bionic topology optimization method with a cyclic variable load is proposed in this paper to optimize dynamic flexibility by simulating the growth law of leaf vein formation and distribution. A material interpolation method is adopted to penalize the material attributes of rib reinforcement according to their thickness, based on polynom

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Duong, Tham Hong. "Studying the Large Span Multi-Cell Steel Box Girder – An Engineering Mechanics Look." Journal of Physics: Conference Series 2949, no. 1 (2025): 012037. https://doi.org/10.1088/1742-6596/2949/1/012037.

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Abstract Thin-walled closed steel structures are now applied widely in urban regions, especially in metropolitan or megacities. Several large span overheads, fly-overs, overpasses, and city sky bridges are built; some are horizontally curved structures for aesthetic, economic, and effective purposes. The working conditions for such structures require careful analysis, not only in the structural analysis but in the science of materials with different levels of knowledge. Stress-strain relationships in static and dynamic aspects, relating to stiffness, local and overall buckling, etc., are prima

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Zhi, Zhi, ShiYong Guo, LuWei Chen, and Yan Zhu. "Research on damage mechanism and protection of the collision penetration of the thin-walled long rod structure." Science Progress 103, no. 1 (2019): 003685041987421. http://dx.doi.org/10.1177/0036850419874216.

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Traffic accidents have been closely concerned by the society, and the serious traffic accidents caused by vehicle and guardrail collisions are one of the main manifestations. However, the research in the field of vehicle and guardrail collisions is mainly limited to the waveform guardrail on the expressway, and there is little research on the urban road guardrail, especially in the secondary damage caused by guardrails field. Moreover, the collision between vehicle and the rectangular guardrail of city road is easy to form thin-walled long rod, and it penetrates the driver’s chest. To evaluate

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Huang, Jiale, Ziyu Zheng, Xiaolin Deng, and Yafei Wang. "Crashworthiness analysis of gradient fractal thin-walled structure." Thin-Walled Structures 181 (December 2022): 110102. http://dx.doi.org/10.1016/j.tws.2022.110102.

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Imene, Mahi, Djafour Naoual, and Djafour Mustapha. "Study of Local and Distortional Stability of Thin-Walled Structures." MATEC Web of Conferences 149 (2018): 01089. http://dx.doi.org/10.1051/matecconf/201814901089.

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Анотація:

Thin-walled structures have an increasingly large and growing field of application in the engineering sector, the goal behind using this type of structure is efficiency in terms of resistance and cost, however the stability of its components (the thin walls) remains the first aspect of the behavior, and a primordial factor in the design process. The hot rolled sections are known by a consequent post-buckling reserve, cold-formed steel sections which are thin-walled elements also benefit, in this case, it seems essential to take into account the favorable effects of this reserve in to the verif

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Lyu, Yongtao, Yibiao Niu, Tao He, Limin Shu, Michael Zhuravkov, and Shutao Zhou. "An Efficient Method for the Inverse Design of Thin-Wall Stiffened Structure Based on the Machine Learning Technique." Aerospace 10, no. 9 (2023): 761. http://dx.doi.org/10.3390/aerospace10090761.

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In this paper, a new method using the backpropagation (BP) neural network combined with the improved genetic algorithm (GA) is proposed for the inverse design of thin-walled reinforced structures. The BP neural network model is used to establish the mapping relationship between the input parameters (reinforcement type, rib height, rib width, skin thickness and rib number) and the output parameters (structural buckling load). A genetic algorithm is added to obtain the inversely designed result of a thin-wall stiffened structure according to the actual demand. In the end, according to the geomet

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Ma, He, Peng Jiao, Huangyang Xu, Xinshuang Li, and Zhiping Chen. "Localized Perturbation Load Approach for Buckling Design of Thin-Walled Steel Cylindrical Shells under Partial Axial Compression." Metals 13, no. 9 (2023): 1539. http://dx.doi.org/10.3390/met13091539.

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A thin-walled steel cylindrical shell is a common engineering structure that has an efficient load-carrying capacity. This structure is more easily subjected to partial axial compression loads in application, and buckling is the main failure mode. However, there are few available design methods for partial axially compressed steel cylindrical shells. Motivated by this, a design method called the localized perturbation load approach (LPLA) is proposed in this paper. The finite element framework for the application of LPLA is established. The location and number of perturbation loads are determi

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Wang, Tong Yue, Ning He, and Liang Li. "Study on the Stability of High-Speed Milling of Thin-Walled Workpiece." Advanced Materials Research 97-101 (March 2010): 1849–52. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.1849.

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Thin-walled structure is easy to vibrate in machining. The dynamic milling model of thin-walled workpiece is analyzed based on the analysis of degrees in two perpendicular directions of machine tool-workpiece system. In high speed milling of 2A12 aluminum alloy, the compensation method based on the modification of inertia effect is proposed and accurate cutting force coefficients are obtained. The machining system is divided into “spindle-cutter” and “workpiece-fixture” two sub-systems and the modal parameters of two sub-systems are acquired via modal analysis experiments. Finally, the stabili

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Zalipaev, V. V., A. B. Movchan, and I. S. Jones. "Waves in lattices with imperfect junctions and localized defect modes." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 464, no. 2096 (2008): 2037–54. http://dx.doi.org/10.1098/rspa.2007.0255.

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A correspondence between continuum periodic structures and discrete lattices is well known in the theory of elasticity. Frequently, lattice models are the result of the discretization of continuous mechanical problems. In this paper, we discuss the discretization of two-dimensional square thin-walled structures. We consider the case when thin-walled bridges have defects in the vicinity of junctions. At these points, the displacement satisfies an effective Robin-type boundary condition. We study a defect vibration mode localized in the neighbourhood of the damaged junction. We analyse dispersio

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Sredanović, Branislav, Đorđe Čiča, Stevo Borojević, Saša Tešić, and Davorin Kramar. "EXPERIMENTAL ANALYSIS AND OPTIMIZATION OF THIN-WALLED TUBULAR PARTS MILLING." Journal of Production Engineering 25, no. 2 (2022): 6–12. http://dx.doi.org/10.24867/jpe-2022-02-006.

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A certain percentage of mechanical parts in the engineering (parts in automotive industry, medical and measuring devices, parts in energetic sector, and etc.), refers to thin-walled structures with optimized shapes and dimensions. In addition to the requirements for a special shape of the structure, there are also requirements related to the dimensional accuracy and surface quality. In this paper, the milling of thin-walled tubular parts is analyzed. Workpiece of mentioned parts was C45E (AISI 1045) steel. Experimental analysis and optimization is based on Taguchi's experimental plan. The infl

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47

Li, Yifeng, Xunpeng Qin, Qiang Wu, Zeqi Hu, and Tan Shao. "Fabrication of curved overhanging thin-walled structure with robotic wire and arc additive manufacturing (RWAAM)." Industrial Robot: the international journal of robotics research and application 47, no. 1 (2019): 102–10. http://dx.doi.org/10.1108/ir-05-2019-0112.

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Purpose Robotic wire and arc additive manufacturing (RWAAM) is becoming more and more popular for its capability of fabricating metallic parts with complicated structure. To unlock the potential of 6-DOF industrial robots and improve the power of additive manufacturing, this paper aims to present a method to fabricate curved overhanging thin-walled parts free from turn table and support structures. Design/methodology/approach Five groups of straight inclined thin-walled parts with different angles were fabricated with the torch aligned with the inclination angle using RWAAM, and the angle prec

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Flodr, Jakub, Martin Krejsa, David Mikolášek, Oldrich Sucharda, and Libor Žídek. "Mathematical Modelling of Thin-Walled Cold-Rolled Cross-Section." Applied Mechanics and Materials 617 (August 2014): 171–74. http://dx.doi.org/10.4028/www.scientific.net/amm.617.171.

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The purpose of the paper is to perform a static analysis of a thin-wall cold-rolled steel cross-section of a trapezoidal sheet by means of a mathematical model developed in ANSYS, commercially available software applications. The trapezoidal sheets are used typically as an external cladding which covers the structures of steel halls. Investigating into behaviour of the trapezoidal sheets subjected to extreme loads represents an urgent issue in wind engineering. A physical tension test has been performed in order to verify and confirm the mathematical model. Experiments have been performed to p

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Wang, Weiwei, Xuetao Lyu, Jun Zheng, Shanchang Yi, Jiehong Li, and Yang Yu. "Post-Fire Seismic Performance of Concrete-Filled Steel Tube Frame Structures Considering Soil-Structure Interaction (SSI)." Buildings 14, no. 2 (2024): 555. http://dx.doi.org/10.3390/buildings14020555.

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Currently, reinforced thin-walled irregular steel tube concrete frame structures have been applied in engineering, but there are few researches on the seismic performance of this type of structures after fire. The seismic performance of structures after fire is generally carried out based on rigid foundation conditions. Therefore, it is of certain engineering and theoretical value to study the seismic performance considering the SSI (soil–structure interaction) in this paper. ABAQUS is employed to establish the finite element models of the reinforced thin-walled irregular steel tube concrete f

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Ahmed, Naveed, Muhammad Ahmad Naeem, Ateekh Ur Rehman, Madiha Rafaqat, Usama Umer, and Adham E. Ragab. "High Aspect Ratio Thin-Walled Structures in D2 Steel through Wire Electric Discharge Machining (EDM)." Micromachines 12, no. 1 (2020): 1. http://dx.doi.org/10.3390/mi12010001.

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Thin structures are often required for several engineering applications. Although thick sections are relatively easy to produce, the cutting of thin sections poses greater challenges, particularly in the case of thermal machining processes. The level of difficulty is increased if the thin sections are of larger lengths and heights. In this study, high-aspect-ratio thin structures of micrometer thickness (117–500 µm) were fabricated from D2 steel through wire electrical discharge machining. Machining conditions were kept constant, whereas the structure (fins) sizes were varied in terms of fin t

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