Bibliographies thématiques / Automotive crashworthiness / Articles de revues

Articles de revues sur le sujet « Automotive crashworthiness »

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Auteur : Grafiati
Publié le 14 mars 2023

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1

Wang, Hong Lei, Dong Xiang, Li Feng Jiang, Guang Hong Duan et Hong Chao Zhang. « Improvement of Vehicle Crashworthiness for Full Frontal Impact Based on Energy Flow Analysis ». Advanced Materials Research 139-141 (octobre 2010) : 1365–69. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.1365.

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Vehicle crashworthiness is one of the most important indicators to assess the automotive performance, which is directly related with passenger’s life and safety. Therefore, more attention has been paid to improve the automotive passive safety. This paper presents the analysis method based on energy flow analysis to solve the automotive crashworthiness problem. The energy transfer model is built based on the constraints analysis for product performance and the rational energy flow element partition. According to the energy transfer model, the energy absorption of each component can be attained from the finite element crash simulation result and also the energy distribution relationship can be analyzed. Based on the analysis results, the full front impact crashworthiness of a car is improved by modifying the energy flow path and distribution. It also demonstrates that the method is effective to solve the automotive crashworthiness problem.
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2

Jacob, George C., John F. Fellers, J. Michael Starbuck et Srdan Simunovic. « Crashworthiness of automotive composite material systems ». Journal of Applied Polymer Science 92, no 5 (2004) : 3218–25. http://dx.doi.org/10.1002/app.20336.

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3

Ryou, Han Sun, Myoung Gyu Lee, Chong Min Kim et Kwan Soo Chung. « Numerical Evaluation of Crashworthiness of Automotive Sheets ». Key Engineering Materials 345-346 (août 2007) : 1537–40. http://dx.doi.org/10.4028/www.scientific.net/kem.345-346.1537.

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Crash simulations were performed for automotive sheets. To understand the influence of crystal structures in sheet materials on crashworthiness, the effect of the yield function shape was studied by adopting the recently developed non-quadratic anisotropic yield surface, Yld2004-18p. The effect of the back-stress was also investigated by comparing simulation results obtained for the isotropic, kinematic and combined isotropic-kinematic hardening laws based on the modified Chaboche model. In addition, the effects of anisotropy and sheet thickness on crashworthiness were evaluated.
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4

BAE, GIHYUN, HOON HUH et SUNGHO PARK. « REGRESSION MODEL FOR LIGHT WEIGHT AND CRASHWORTHINESS ENHANCEMENT DESIGN OF AUTOMOTIVE PARTS IN FRONTAL CAR CRASH ». International Journal of Modern Physics B 22, no 31n32 (30 décembre 2008) : 5584–89. http://dx.doi.org/10.1142/s0217979208050851.

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This paper deals with a regression model for light weight and crashworthiness enhancement design of automotive parts in frontal car crash. The ULSAB-AVC model is employed for the crash analysis and effective parts are selected based on the amount of energy absorption during the crash behavior. Finite element analyses are carried out for designated design cases in order to investigate the crashworthiness and weight according to the material and thickness of main energy absorption parts. Based on simulations results, a regression analysis is performed to construct a regression model utilized for light weight and crashworthiness enhancement design of automotive parts. An example for weight reduction of main energy absorption parts demonstrates the validity of a regression model constructed.
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5

Zhang, Yong, Ning He et Yubo Hou. « Crashworthiness Optimization of a Vertex Fractal Hexagonal Structure ». International Journal of Computational Methods 17, no 07 (30 mai 2019) : 1950031. http://dx.doi.org/10.1142/s0219876219500312.

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Thin-walled structures are used in automotive industry due to their excellent lightweight and crashworthiness properties. This paper proposes a vertex fractal multi-cell hexagonal structure to develop a novel lightweight energy absorber. Experimental analysis and numerical modeling are performed to investigate the crashworthiness of the fractal multi-cell hexagonal structures. The numerical results indicate that fractal configurations and geometrical parameters of the fractal hexagonal structure have significant effect on the crashworthiness. In addition, the multi-objective design optimization is performed to seek the optimal crashworthiness parameters and explore the optimal crashworthiness of the fractal hexagonal structure. The results show that the fractal multi-cell hexagonal structure outperforms non-fractal hexagonal structure.
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6

Ghasemnejad, H., H. Hadavinia et G. Simpson. « Crashworthiness Optimization of Crash Box in Automotive Structure ». Key Engineering Materials 348-349 (septembre 2007) : 661–64. http://dx.doi.org/10.4028/www.scientific.net/kem.348-349.661.

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In this paper the energy absorption of thin-walled aluminium tubes used as crash boxes in the body structure of a vehicle has been optimized. In order to achieve this, various cross-sections of extruded aluminium were chosen and their behaviour under dynamic impact loading was investigated. The crash boxes were made from aluminium alloy 6060 temper T4. Finite element software LS-DYNA in ANSYS was used for modelling. For each cross-section, the results of dynamic crushing load versus crushing distance was obtained from the FE simulation and the results were compared with the experimental and numerical work on a square crash box in the literature. Parameters such as the crush force efficiency and the specific energy of various crash boxes were compared with the relevant ones for the square crash box and the most efficient crash box was recommended.
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7

Safari, Hamid, Hassan Nahvi et Mohsen Esfahanian. « Improving automotive crashworthiness using advanced high strength steels ». International Journal of Crashworthiness 23, no 6 (19 octobre 2017) : 645–59. http://dx.doi.org/10.1080/13588265.2017.1389624.

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8

Yamaguchi, Keiji, Kazuhiro Izui, Shinji Nichiwaki et Hirotaka Shiozaki. « 2210 Crashworthiness Evaluation Method for Automotive Conceptual Design ». Proceedings of Design & ; Systems Conference 2010.20 (2010) : _2210–1_—_2210–6_. http://dx.doi.org/10.1299/jsmedsd.2010.20._2210-1_.

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9

Chung, K. « Parametric Study on Crashworthiness of Automotive Sheet Alloy ». Metals and Materials International 14, no 1 (26 février 2008) : 21–31. http://dx.doi.org/10.3365/met.mat.2008.02.021.

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10

Jacob, George C., John F. Fellers, Srdan Simunovic et J. Michael Starbuck. « Energy Absorption in Polymer Composites for Automotive Crashworthiness ». Journal of Composite Materials 36, no 7 (avril 2002) : 813–50. http://dx.doi.org/10.1177/0021998302036007164.

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11

Prabhaharan S. A., G. Balaji et Krishnamoorthy Annamalai. « Numerical simulation of crashworthiness parameters for design optimization of an automotive crash-box ». International Journal for Simulation and Multidisciplinary Design Optimization 13 (2022) : 3. http://dx.doi.org/10.1051/smdo/2021036.

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Automotive manufacturers rely on rigorous testing and simulations to construct their vehicles durable and safe in all aspects. One such vital factor is crash safety, otherwise known as crashworthiness. Crash tests are conventional forms of non-destructive methods to validate the vehicle for its crashworthiness and compatibility based on different operating conditions. The frontal impact test is the most primary form of crash test, which focuses on improving passenger's safety and comfort. According to NHTSA, a vehicle is rated based on these safety criteria, for which automobile manufacturers conduct a plethora of crash-related studies. Numerical simulation aids them in cutting down testing time and overall cost endured by providing a reliable amount of insights into the process. The current study is aimed at improving the crashworthiness of a crash box in a lightweight passenger car, such that it becomes more energy absorbent in terms of frontal impacts. All necessary parameters such as energy absorption, mean crush force, specific energy absorption, crush force efficiencies are evaluated based on analytical and finite element methods. There was a decent agreement between the analytical and simulation results, with an accuracy of 97%. The crashworthiness of the crash box was improved with the help of DOE-based response surface methodology (RSM). The RSM approach helped in improving the design of the crash box with enhanced EA & CFE by 30% and 8.8% respectively. The investigation of design variables on the energy absorption capacity of the thin-walled structure was also done. For the axial impact simulations, finite element solver Virtual Performance Solution − Pam Crash from the ESI group is used.
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12

Gui, Chunyang, Jiantao Bai et Wenjie Zuo. « Simplified crashworthiness method of automotive frame for conceptual design ». Thin-Walled Structures 131 (octobre 2018) : 324–35. http://dx.doi.org/10.1016/j.tws.2018.07.005.

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13

Reid, J. D. « Crashworthiness of automotive steel midrails : Thickness and material sensitivity ». Thin-Walled Structures 26, no 2 (octobre 1996) : 83–103. http://dx.doi.org/10.1016/0263-8231(96)00010-9.

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14

Sun, Guangyong, Jun Tian, Tangying Liu, Xiaolei Yan et Xiaodong Huang. « Crashworthiness optimization of automotive parts with tailor rolled blank ». Engineering Structures 169 (août 2018) : 201–15. http://dx.doi.org/10.1016/j.engstruct.2018.05.050.

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15

Jiang, Li Feng, Dong Xiang, Duo Zeng, Hong Lei Wang et Guang Hong Duan. « Automotive Crashworthiness Optimization Using Energy Flow Based Variable Screening ». Key Engineering Materials 450 (novembre 2010) : 133–36. http://dx.doi.org/10.4028/www.scientific.net/kem.450.133.

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A variable screening method based on energy flow analysis is provided for significant variables selection in crashworthiness optimizing. Two quantities, significance and specific energy absorption, are used to screen design variables. These quantities are calculated from energy relation matrix and energy absorption of parts. Energy relation matrix is built from finite element crash simulation result to describe energy flow path in parts during impact. The method is applied in the case of a car engine room under frontal impact. Optimization for lightweight using response surface method is performed on the reduced variable set at a relatively low computational cost.
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16

Huang, Shilin, Fengwu Liu, Jinhuan Zhang et Yonghua Zhu. « Improving design for crashworthiness of a minibus ». International Journal of Vehicle Safety 1, no 1/2/3 (2005) : 35. http://dx.doi.org/10.1504/ijvs.2005.007536.

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17

Yoo, S. H., N. T. Jeong, K. S. Kim, S. M. Yang, J. H. Lee, S. H. Choi et M. W. Suh. « Crashworthiness of chromium plated plastic radiator grille ». International Journal of Automotive Technology 17, no 4 (2 juin 2016) : 681–87. http://dx.doi.org/10.1007/s12239-016-0067-0.

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18

Kaushik, Anshul, et Anand Ramani. « Topology optimization for nonlinear dynamic problems : Considerations for automotive crashworthiness ». Engineering Optimization 46, no 4 (10 mai 2013) : 487–502. http://dx.doi.org/10.1080/0305215x.2013.776553.

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19

Wang, Hui-Ping, Cheng-Tang Wu, Yong Guo et Mark E. Botkin. « A coupled meshfree/finite element method for automotive crashworthiness simulations ». International Journal of Impact Engineering 36, no 10-11 (octobre 2009) : 1210–22. http://dx.doi.org/10.1016/j.ijimpeng.2009.03.004.

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20

Sinha, Kaushik. « Reliability-based multiobjective optimization for automotive crashworthiness and occupant safety ». Structural and Multidisciplinary Optimization 33, no 3 (21 octobre 2006) : 255–68. http://dx.doi.org/10.1007/s00158-006-0050-x.

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21

Shin, Jaeho, Kyungjin Kim, Kyeonghee Han, Jeong Min In, Hyung-Jin Chang, Sojung Shim et Siwoo Kim. « Crashworthiness Evaluation of a Hydrogen Bus Fuel System ». International Journal of Automotive Technology 23, no 5 (octobre 2022) : 1483–90. http://dx.doi.org/10.1007/s12239-022-0129-4.

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22

Salwani, M. Salleh, Aidy Ali, Sahari B. Barkawi, A. A. Nuraini, A. A. Faieza, Tuan Hafandi Tuan Ismail, J. Mai Nursherida et al. « Analysis on Impact Performance of Aluminum Automotive Side Member ». Applied Mechanics and Materials 165 (avril 2012) : 209–13. http://dx.doi.org/10.4028/www.scientific.net/amm.165.209.

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In this study an aluminium alloy is introduced as an alternative lightweight material in automotive industry. In order to achieve lightweight design, the study was undertaken on a side member of automotive parts. Crashworthiness performance of AA5182 side member is compared to the automotive steel side member. By designing 16 experiments based on full factorial design, the effect of thickness with four levels on the crash performance of the AA5182 side member was investigated for each loading conditions, axial and oblique loading. Mass, energy absorbed and maximum force is set as the evaluation criterion and the full factorial design has presented several designs to serve the evaluated criterion.
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23

Rusinek, Alexis, et Ramon Zaera. « Material definition to design vehicle components, application to crashworthiness ». Logistics and Transport, no 38 (2018) : 63. http://dx.doi.org/10.26411/83-1734-2015-2-38-7-18.

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In this paper a short description is reported allowing to take into account some aspects to design structures used for automotive industries. It allows to define correctly the behaviour of a vehicle and mainly the passive structures to absorb energy during an accident or an impact. The main aspect related to the behaviour is the strain rate sensitivity coupled to the process of elastic wave propagation.
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24

Bennett, J. A., et G. J. Park. « Automotive Occupant Dynamics Optimization ». Shock and Vibration 2, no 6 (1995) : 471–79. http://dx.doi.org/10.1155/1995/682694.

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One of the more difficult optimal design tasks occurs when the data describing the system to be optimized is either highly nonlinear or noisy or both. This situation arises when trying to design restraint systems for automotive crashworthiness using the traditional lumped parameter analysis methods. The nonlinearities in the response can come from either abrupt changes in the occupants interaction with the interior or from relatively minor fluctuation in the response due to the interactions of two restraint systems such as belts and airbags. In addition the calculated response measures are usually highly nonlinear functions of the accelerations. Two approaches using an approximate problem formulation strategy are proposed. One approach uses a first-order approximation based on finite difference derivatives with a nonlocal step size. The second and more effective approach uses a second-order curve fitting strategy. Successful example problems of up to 16 design variables are demonstrated. A conservative design strategy using a derivative-based constraint padding is also discussed. The approach proves effective because analytical expressions are available for the second-order terms.
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25

Xu, Tao, Liang Hao, Yi Wen Li et Qiang Li. « Research of Simplified B Pillar Model for Roof Crashworthiness ». Applied Mechanics and Materials 34-35 (octobre 2010) : 404–9. http://dx.doi.org/10.4028/www.scientific.net/amm.34-35.404.

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The B pillar structure, which affects automotive roof crashworthiness, must have a perfect surrogate model to satisfy the early design demands. This work aims to explore the proper approach of simplified model construction. To create the simplified B pillar, the collapse theories of thin-walled hexagonal and channel beams under bending collapse are reviewed and applied to simulate the deforming behavior. Meanwhile, the simplified model is constructed from parallel connection of curved hexagonal and channel section beams. After distributing different rotational nonlinear springs, the same crashworthiness analyses are performed on both simplified and initial FE models to verify the simplified effects. The results demonstrate the potential of the approach and process proposed in developing the simplified model for the concept design of autobody.
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26

ISMAIL, AL EMRAN. « EXPERIMENTAL STUDIES ON THE QUASI-STATIC AXIAL CRUSHING BEHAVIOR OF FOAM-FILLED STEEL EXTRUSION TUBES ». IIUM Engineering Journal 10, no 1 (29 septembre 2010) : 1–17. http://dx.doi.org/10.31436/iiumej.v10i1.101.

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The concerns of automotive safety have been given special attention in order to reduce human fatalities or injuries. One of the techniques to reduce collision impact or compression energy is by filling polymeric foam into metallic tubes. In this work, polyurethane foam was introduced into the steel extrusion tubes and quasi-statically compressed at constant cross-head displacement. Different tube thicknesses and foam densities were used and these parameters were related to the crashworthiness aspect of the foam-filled structures. It is found that both tube thickness and foam density played an important role in increasing the crashworthiness behaviours of the structures but when the tube thickness reached certain value, foam density unable to properly work in increasing the energy absorption of the structures.
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27

Shaaban, Amr, et Adel Moneb Elsabbagh. « Crashworthiness Optimization of Impact Attenuators Constructed of Polyurethane Foam ». International Journal of Automotive Technology 23, no 2 (avril 2022) : 389–401. http://dx.doi.org/10.1007/s12239-022-0036-8.

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28

Mizuno, K. « Vehicle crashworthiness in full and offset frontal impact tests ». JSAE Review 24, no 2 (avril 2003) : 173–81. http://dx.doi.org/10.1016/s0389-4304(03)00004-3.

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29

Kongwat, Suphanut, Pattaramon Jongpradist et Hiroshi Hasegawa. « Lightweight Bus Body Design and Optimization for Rollover Crashworthiness ». International Journal of Automotive Technology 21, no 4 (1 juillet 2020) : 981–91. http://dx.doi.org/10.1007/s12239-020-0093-9.

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30

Sapuan, S. M., N. Suddin et M. A. Maleque. « A Critical Review of Polymer-based Composite Automotive Bumper Systems ». Polymers and Polymer Composites 10, no 8 (novembre 2002) : 627–36. http://dx.doi.org/10.1177/096739110201000806.

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An automobile bumper is a structural component, which contributes to vehicle crashworthiness or occupant protection during front or rear collisions. The bumper systems also protect the hood, trunk, fuel, exhaust and cooling system as well as safety related equipments. A brief description of bumper components and a critical review of polymer-based bumper systems with specific methodology are provided. This article advocates proper bumper design and material selection. The authors also discuss bumper components from the standpoint of the materials and their manufacturing processes.
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31

Liu, Chunke, Jianxing Li et Xiaojun Xu. « Application of Improved RSM in the Optimization of Automotive Frontal Crashworthiness ». Journal of Transportation Technologies 06, no 03 (2016) : 155–61. http://dx.doi.org/10.4236/jtts.2016.63015.

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32

Zhao, Zhendong, Zheng Jiang, Cheng Hu, Yuanlong Wang et Liguo Zang. « Crashworthiness Optimization of an Automotive Frame Based on Gray Relation Theory ». SAE International Journal of Commercial Vehicles 15, no 1 (9 avril 2021) : 27–35. http://dx.doi.org/10.4271/02-14-04-0032.

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33

Jacob, George Chennakattu, James Michael Starbuck, John Francis Fellers et Srdan Simunovic. « Energy Absorption in Chopped Carbon Fiber Epoxy Composites for Automotive Crashworthiness ». Polymer Journal 35, no 7 (2003) : 560–67. http://dx.doi.org/10.1295/polymj.35.560.

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34

Van Slycken, J., P. Verleysen, J. Degrieck, J. Bouquerel et B. C. De Cooman. « Crashworthiness characterization and modelling of high-strength steels for automotive applications ». Proceedings of the Institution of Mechanical Engineers, Part D : Journal of Automobile Engineering 220, no 4 (avril 2006) : 391–400. http://dx.doi.org/10.1243/09544070jauto26.

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35

Craig, K. J., Nielen Stander, D. A. Dooge et S. Varadappa. « Automotive crashworthiness design using response surface‐based variable screening and optimization ». Engineering Computations 22, no 1 (janvier 2005) : 38–61. http://dx.doi.org/10.1108/02644400510572406.

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36

Papadakis, Loucas, Alexander Schober et Michael F. Zaeh. « Considering manufacturing effects in automotive structural crashworthiness : A simulation chaining approach ». International Journal of Crashworthiness 18, no 3 (juin 2013) : 276–87. http://dx.doi.org/10.1080/13588265.2013.776338.

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37

Liu, Yucheng, et Michael L. Day. « Simplified truck chassis modelling and crashworthiness analysis ». International Journal of Heavy Vehicle Systems 15, no 2/3/4 (2008) : 237. http://dx.doi.org/10.1504/ijhvs.2008.022244.

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38

Han, J., et K. Yamazaki. « Crashworthiness optimisation of S-shape square tubes ». International Journal of Vehicle Design 31, no 1 (2003) : 72. http://dx.doi.org/10.1504/ijvd.2003.002048.

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39

Bureerat, Sujin, Sadiq M. Sait, Cho Mar Aye, Nantiwat Pholdee et Ali R. Yildiz. « Multi-surrogate-assisted metaheuristics for crashworthiness optimisation ». International Journal of Vehicle Design 80, no 2/3/4 (2019) : 223. http://dx.doi.org/10.1504/ijvd.2019.10032332.

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40

Aye, Cho Mar, Nantiwat Pholdee, Ali R. Yildiz, Sujin Bureerat et Sadiq M. Sait. « Multi-surrogate-assisted metaheuristics for crashworthiness optimisation ». International Journal of Vehicle Design 80, no 2/3/4 (2019) : 223. http://dx.doi.org/10.1504/ijvd.2019.109866.

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41

Yoshimura, Masataka, Shinji Nishiwaki et Kazuhiro Izui. « A Multiple Cross-Sectional Shape Optimization Method for Automotive Body Frames ». Journal of Mechanical Design 127, no 1 (1 janvier 2005) : 49–57. http://dx.doi.org/10.1115/1.1814391.

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Automotive body frames, which profoundly affect automotive performance such as crashworthiness, are generally formed using pressed metal sheets, and the assembled cross-sectional shapes govern the frame characteristics. This paper proposes a cross-sectional shape generating method for achieving the cross-sectional properties assigned by design engineers. The cross-sectional shape-generating problem for pressed metal sheets is formulated as a multiobjective optimization problem that involves a marriage of continuous variables, such as shape dimensions, and discrete design variables, such as types of material and their thicknesses. Genetic algorithms are applied to solve the optimization problem.
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42

Gao, Dawei, Haotian Liang, Guijie Shi et Liqin Cao. « Multiobjective Optimization of Carbon Fiber-Reinforced Plastic Composite Bumper Based on Adaptive Genetic Algorithm ». Mathematical Problems in Engineering 2019 (15 novembre 2019) : 1–12. http://dx.doi.org/10.1155/2019/8948315.

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Genetic algorithm (GA) is a common optimization technique that has two fatal limitations: low convergence speed and premature convergence to the local optimum. As an effective method to solve these drawbacks, an adaptive genetic algorithm (AGA) considering adaptive crossover and mutation operators is proposed in this paper. Verified by two test functions, AGA shows higher convergence speed and stronger ability to search the global optimal solutions than GA. To meet the crashworthiness and lightweight demands of automotive bumper design, CFRP material is employed in the bumper beam instead of traditional aluminum. Then, a multiobjective optimization procedure incorporating AGA and the Kriging surrogate model is developed to find the optimal stacking angle sequence of CFRP. Compared with the conventional aluminum bumper, the optimized CFRP bumper exhibits better crashworthiness and achieves 43.19% weight reduction.
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43

Kohar, Christopher P., Daniel S. Connolly, Timofei Liusko et Kaan Inal. « Using Artificial Intelligence to Aid Vehicle Lightweighting in Crashworthiness with Aluminum ». MATEC Web of Conferences 326 (2020) : 01006. http://dx.doi.org/10.1051/matecconf/202032601006.

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Significant efforts have been made in the automotive industry to reduce vehicle weight in order to improve vehicle fuel economy and reduce greenhouse gas emissions. New innovations in structural lightweight alloys and manufacturing techniques have allowed automakers to replace conventional steel with lighter aluminum structures. However, automakers have an enormous number of material and gauge thickness combinations to consider in the development process of the next generation production vehicle. Furthermore, the design combination of these materials and structures must not compromise the integrity of the vehicle during a vehicle collision. With the proliferation of inexpensive computational resources, automakers can now explore the effect of material selection on the crashworthiness of next-generation vehicles using computer simulations. While information from these simulations can be manually extracted, the vast amount of data lends itself to artificial intelligence (AI) techniques that can extract knowledge faster and provide more useful interpretations that can be convenient for designers and engineers. This work presents a framework for using artificial intelligence to aid the vehicle design cycle in crashworthiness using aluminum. Virtual experiments of a frontal crash condition of a pick-up truck are performed using finite element analysis to generate the data for this method. Different commercially available aluminum alloys and gauge thicknesses are varied in the virtual experiments. An advanced type of recurrent neural network is used to predict the time-series response of the occupant crash-pulse response, which is a key crashworthiness metric that is used for evaluating safety. This work highlights how automotive designs and engineers can leverage this framework to accelerate the development cycle of the next-generation lightweight vehicle.
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44

Mohr, Dirk, et Tomasz Wierzbicki. « On the Crashworthiness of Shear-Rigid Sandwich Structures ». Journal of Applied Mechanics 73, no 4 (7 novembre 2005) : 633–41. http://dx.doi.org/10.1115/1.2165232.

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This paper deals with the evaluation of the crashworthiness of thin-walled sandwich box structures for automotive applications. Quasi-static crushing simulations are carried out to estimate the energy absorption of prismatic box columns made from sandwich sheets. The sandwich sheets have perforated cores of different densities with staggered holes perpendicular to the panel faces. It is found that the specific energy absorption of columns made of sandwich sheets is approximately the same as that of conventional columns composed of homogeneous sheets of the same total wall thickness. Furthermore, theoretical analysis indicates that by increasing the core thickness, sandwich structures could be up to 50% lighter while providing the same mean crushing force. However, these gains may not be achieved in practical applications since increasing the core thickness also increases the likelihood of premature face sheet fracture during crushing.
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Al-Jothery, H. K. M., T. M. B. Albarody, P. S. B. M. Yusoff, M. A. Abdullah, A. R. Hussein et M. F. B. M. Pahmi. « Crashworthiness Design for Trapezoid Origami Crash Structure Numerical ». International Journal of Automotive and Mechanical Engineering 17, no 1 (30 mars 2020) : 7667–74. http://dx.doi.org/10.15282/ijame.17.1.2020.14.0569.

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Corrugations can be considered to be one of the ways to improve the mechanical properties of thin-walled structure in terms of manipulation of surface area. However, this theory requires further validation through experimentation of different materials. Although many research works have been done towards the corrugated shell structures, the flexibility of corrugated sheets of thermoset composite material remains unknown. This study focused on the effects of surface area manipulation by using trapezoid origami structure which is trapezoidal folded lobe shape on the absorbed energy and mechanical properties of Epoxy reinforced with S-type fibreglass. Then the trapezoidal folded lobe shape design was drawn by using AutoCAD which consist of the design of the corrugated composite sheets and the design of trapezoidal folded lobe shape mould. Moreover, the fabrication of the Aluminum mould was done by using a CNC milling machine according to the drawing. So, a compression moulding machine will be used to fabricate the composite structure. Therefore, the vibration and compression tests were carried out to perform a study on the behaviour of the trapezoidal folded lobe thermoset samples and to investigate their deformation behaviour respectively. Based on those tests, the results are shown that the trapezoidal origami samples have higher virtual stiffness than the flat samples, and the trapezoidal origami crash thin wall absorbs 40 % more energy in Y-axis direction compared to in X-axis direction.
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Holnicki-Szulc, Jan, et Lech Knap. « Adaptive crashworthiness concept ». International Journal of Impact Engineering 30, no 6 (juillet 2004) : 639–63. http://dx.doi.org/10.1016/j.ijimpeng.2003.08.004.

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Qi, Chang, Shu Yang et Ping Hu. « Magic Cube Approach Application on Crashworthiness Design of Front Rail for Weight Reduction ». Advanced Materials Research 308-310 (août 2011) : 668–73. http://dx.doi.org/10.4028/www.scientific.net/amr.308-310.668.

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Weight reduction is a priority across the automotive industry for improved fuel efficiency and CO2 reduction, and crash safety is the first design criterion considered during vehicle development. This paper is concerned with lightweight design of front rail on a vehicle chassis frame structure through material substitution, i.e., replacing the original mild steel with advanced high strength steel (AHSS), without deteriorating the vehicle’s crashworthiness performance. Magic Cube approach (MQ), a systematic design approach, is conducted to analyze the design problem: by applying space decomposition, a system-to-subsystem-to-component model is developed, which simplifies the design problem. Numerical simulation is carried out with LS-DYNA to evaluate the crashworthiness performances of the original and the new-designed front rail. The result shows that up to 30% weight can be reduced in the new design through material substitution while the crash performance remains the same as in the original design.
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Patil, Sanjay, Arvind Bhosale, Vijaypatil Dhepe, Dheeraj Lengare et Ravi Kakde. « Impact Energy Absorption Capability of Polygonal Cross-Section Thin-Walled Beams under Lateral Impact ». International Journal of Innovative Research and Scientific Studies 4, no 4 (9 septembre 2021) : 205–14. http://dx.doi.org/10.53894/ijirss.v4i4.96.

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The continuing efforts of automotive technology aim to deliver even greater safety benefits and reduce the weight of a vehicle. Thin-walled beams (TWB) are widely used as strengtheners or energy absorbers in vehicle bodies due to their lightweight and excellent energy absorption capacity. Thus, researchers are interested in the collapse behaviour and mechanical properties of thin-walled beams under static and dynamic loadings. Circular TWB is commonly used in vehicle side doors. In the event of a side collision, this beam deforms and absorbs the greatest amount of impact energy. In this study, the energy absorption capability and crashworthiness of polygonal cross-section TWBs subjected to lateral impact was investigated using numerical simulations. Polygonal TWB ranging from square to dodecagon, as well as circular cross section, were selected for this study. Energy absorption (EA), specific energy absorption (SEA) and crash force efficiency (CFE) crashworthiness indicators are employed to evaluate the bending collapse performance. Because TWB thickness and weight have a greater impact on bending performance, they were kept constant across all polygons. In ABAQUS explicit dynamic software, finite element simulations are performed, and plastic hinges and flattening patterns of all polygons are examined. The results show that heptagon, octagon, and nonagon cross-section TWB perform better in crashworthiness than square and circular TWB.
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Diermann, Verena, et Peter Middendorf. « Automatic Evaluation of Structural Integrity in Crashworthiness Simulations Using Image Analysis ». International Journal of Automotive Technology 20, no 1 (février 2019) : 65–72. http://dx.doi.org/10.1007/s12239-019-0006-y.

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Lisok, Joanna. « Application of Modern Technology to Improve Safety in the Automotive Industry ». Solid State Phenomena 246 (février 2016) : 271–74. http://dx.doi.org/10.4028/www.scientific.net/ssp.246.271.

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The paper presents a quick survey of current informatics technologies in automotive industry. To reach a high level of safety requirement and minimize the occurrence and consequences of automobile accidents number of studies have been investigated on the prediction the crash event. These investigations are performed by both techniques: numerical and experimental and they can significantly improve crashworthiness of selected auto-parts such a bumper-beam or crash-box under impact loadings. Describe several different methods and materials to optimize the shape of these parts for maximum energy absorption. Since the crash-box is one of the most important automotive parts for crash energy absorption a fully dialed process technology of those parts was simulated using FEM and presented in this study.
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