Applied Mathematics and Mechanics (English Edition) ›› 2016, Vol. 37 ›› Issue (2): 227-236.doi: https://doi.org/10.1007/s10483-016-2027-8

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

Haibo WANG1, Ruirui LIU1,2, Jialing YANG1, Hua LIU1, Yuxin SUN1   

  1. 1. School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China;
    2. Jiuquan Satellite Launch Centre, Jiuquan 732750, Gansu Province, China
  • 收稿日期:2015-01-06 修回日期:2015-06-29 出版日期:2016-02-01 发布日期:2016-02-01
  • 通讯作者: Yuxin SUN E-mail:yxsun@buaa.edu.cn
  • 基金资助:

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

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

Haibo WANG1, Ruirui LIU1,2, Jialing YANG1, Hua LIU1, Yuxin SUN1   

  1. 1. School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China;
    2. Jiuquan Satellite Launch Centre, Jiuquan 732750, Gansu Province, China
  • Received:2015-01-06 Revised:2015-06-29 Online:2016-02-01 Published:2016-02-01
  • Contact: Yuxin SUN E-mail:yxsun@buaa.edu.cn
  • Supported by:

    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.

关键词: elliptical tube, strain hardening, strain rate, lateral impact

Abstract:

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.

Key words: elliptical tube, strain hardening, strain rate, lateral impact

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