Topological study about deformation behavior and energy absorption performances of 3D chiral structures under dynamic impacts

Yuchen Wei; Chunyang Huang; Ling RenYiming LiangZhaobo WuMengqi Yuan

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Topological study about deformation behavior and energy absorption performances of 3D chiral structures under dynamic impacts

机译：Topological study about deformation behavior and energy absorption performances of 3D chiral structures under dynamic impacts

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摘要

The dynamic deformation behavior and energy absorption characteristics of the 3D chiral structures were analyzed by the explicit dynamics analysis module of ANSYS/LS-DYNA. The 3D chiral structure arrayed with different micro-cell parameters cells are established. The respective influences of impact velocities, rotation angles, number and diameter of beams on the deformation behaviors, the dynamic plateau stresses, the absorbed energy, and crush stress efficiency (CSE) are explored in detail. It is shown that the 3D chiral structure exhibits torsional effect and has better energy absorption properties under low-speed impact. At high speed impact, the 3D chiral structure is affected by the impact reinforcement. This leads to a segmentation characteristic between plateau stress and impact velocity for 3D chiral structures. For the given impact velocity, the dynamic plateau stresses are related to the number and diameter of beam by a power law and a quadratic curves, respectively. The results of this study provide scientific guidance and technical support for the optimization and effective design of 3D chiral structures.

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来源
《The Journal of Strain Analysis for Engineering Design》 |2023年第3期|208-220|共13页
作者
Yuchen Wei; Chunyang Huang; Ling RenYiming LiangZhaobo WuMengqi Yuan;
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作者单位

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology;

School of Engineering and Design, Technical University of Munich;

Centre for Academic Primary Care||University of Central LancashireState Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences||Key Laboratory of Networked Control System, Chinese Academy of Sciences||Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类
关键词
3D chiral structure; micro-cell parameter; deformation behavior; plateau stress; energy density;

Topological study about deformation behavior and energy absorption performances of 3D chiral structures under dynamic impacts

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