Skip Navigation
Skip to contents

한국자동차공학회

Login

23권 6호 1579-1592 2022 [IJAT]

제목 ANALYSIS AND OPTIMIZATION OF AN EXPANDING ENERGY ABSORBER WITH VARIABLE THICKNESS DISTRIBUTION TUBE UNDER AXIAL DYNAMIC LOADING
분야 Materials and Recycling
언어 English
저자 Yanqing Wang(CRRC Qingdao Sifang Co., Ltd.), Shiming Wang(Central South University), Lin Hou(Central South University), Yong Peng(Central South University)
Key Words Expanding tube, Variable thickness, Finite element (FE) model, Optimization, Crashworthiness
초록 An expanding energy absorber with variable thickness distribution tube is proposed and studied in this work. At first, a uniform thickness tube structure finite element (FE) model was developed and then verified by the results of an impact test. The parametric study found that outer obliquity angle β and inner obliquity angle γ have positive influence on initial peak force (Fp). While as axial distribution ratio l less than 0.1, the l has significant positive effect on Fp. The non-monotonicity of specific energy absorption (SEA) with design parameters of β and γ was found. Increasing the parameter l could obviously improve the SEA. To obtain the optimal design, an integrated optimization methodology was applied. The Pareto fronts show that there is a lot of room for improvement of original design. The optimal compromising solution increased the SEA by 12.60 % with Fp decreased by 14.24 kN comparing with that of original design. At last, the optimization result were verified. The study stated that the proposed variable thickness distribution tube of expanding energy absorber is conducive to improving the crashworthiness of rail vehicles.
미리보기 다운로드
원문(PDF) 다운로드

사단법인 한국자동차공학회

  • TEL : (02) 564-3971 (사무국 업무시간 : 평일 오전 8시~)
  • FAX : (02) 564-3973
  • E-mail : ksae@ksae.org

Copyright © by The Korean Society of Automotive Engineers. All rights reserved.