Transactions of Materials and Heat Treatment

Title：Influence of ribs on impact resistance for energy-absorbing components and optimal design

Authors： Ma Xiao Miao Shimeng

Unit： Shenyang Aerospace University

KeyWords： energy-absorbing components additional ribs buckling mode impact resistance energy-absorbing property

ClassificationCode：O342

year,vol(issue):pagenumber：2023,48(5):314-320

Abstract：

In order to improve the impact resistance of single-cell thin-walled energy-absorbing component, a single-cell thin-wall energy-absorbing component with external additional ribs was designed, and the influence of rib shape on the impact resistance of component was investigated. Firstly, based on the ABAQUS dynamic display analysis, the energy absorption characteristics and damage modes of aluminum alloy thin-walled circular tubes with different rib shapes under axial compression were simulated. And the results show that the amage mode model of the energy-absorbing component with external additional triangular ribs is stable and the energy absorption is high. Then, the energy-absorbing component was optimized by the response surface model, and a new index for evaluating the impact resistance of the energy-absorbing component of impact resistance index P was proposed. The results show that after optimization, the thickness of circular tube for the base unit of the energy-absorbing component is 2.07 mm, the thickness of the triangular rib is 0.98 mm, the impact resistance index P is increased by 9.5% compared with that before optimization. At this time, the specific energy absorption and the average bearing capacity of component are 47542.1 kJ·g-1 and 12760.300 kJ, respectively.

Funds：

校引进人才科研启动基金项目（19YB18）

作者简介：马箫（1987-），女，博士，讲师,E-mail：540721373@qq.com;通信作者：苗诗梦（1996-），女，硕士研究生,E-mail：2050598542@qq.com

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