Theoretical model for elliptical tube laterally impacted by two parallel rigid plates  

作　　者：Haibo WANG Ruirui LIU Jialing YANG Hua LIU Yuxin SUN 

机构地区：[1]School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China [2]Jiuquan Satellite Launch Centre, Jiuquan 732750, Gansu Province, China

出　　处：《Applied Mathematics and Mechanics(English Edition)》2016年第2期227-236,共10页应用数学和力学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(No.11032001)

摘　　要：An analytical model is developed to study the crushing behavior and energy absorption capability of a single elliptical tube impacted by two parallel rigid plates, with and without consideration of the strain hardening effect. The four-hinge collapse mechanism is used, and the governing equation is derived from Lagrange equations of the second kind. The numerical simulation of the dynamic response of the elliptical tube under impact using the finite element explicit code LS-DYNA is performed. The reaction force-displacement curve and displacement-time curve of the plate obtained from the two methods are in good agreement.An analytical model is developed to study the crushing behavior and energy absorption capability of a single elliptical tube impacted by two parallel rigid plates, with and without consideration of the strain hardening effect. The four-hinge collapse mechanism is used, and the governing equation is derived from Lagrange equations of the second kind. The numerical simulation of the dynamic response of the elliptical tube under impact using the finite element explicit code LS-DYNA is performed. The reaction force-displacement curve and displacement-time curve of the plate obtained from the two methods are in good agreement.

关 键 词：elliptical tube strain hardening strain rate lateral impact 

分 类 号：O344.1[理学—固体力学]