基于仿生微圆结构的汽车吸能盒耐撞性分析

摘要/Abstract

摘要： 为提高汽车吸能盒的耐撞性，受甲虫鞘翅微观结构启发,研究了一种可应用于吸能盒结构设计的仿生微圆结构。建立了仿生微圆结构的有限元模型，对比分析了仿生微圆结构与传统肋板结构的吸能特性。基于简化超折叠单元理论，推导了仿生微圆结构在轴向载荷下的平均压溃力理论解。研究结果表明：与传统肋板结构相比，仿生微圆结构的能量吸收效率提高了32.20％以上，且理论解与试验结果的吻合度较高。

关键词: 仿生, 微圆结构, 吸能盒, 压溃试验, 耐撞性

Abstract: Aiming to improve the crashworthiness of the vehicle crash boxes, a kind of bionic microcircular structure（BMS) was studied, which was inspired by the microstructures of the beetle's elytra that might be applied to the structure design of the vehicle crash boxes. The finite element models of BMS were established, and the energy absorption characteristics of BMS and traditional rib structure(TRS) were compared and analyzed. Based on the simplified super folding element（SSFE） theory, the theoretical solutions of the average crushing forces for BMS were derived under axial loads. The research results show that compared with TRS, the energy absorption efficiency of TRS is increased more than 32.20%, and the theoretical solutions agree well with the test results.

Key words: bionic, microcircular structure, crash box, crushing test, crashworthiness

中图分类号:

TB303

白中浩;谭雯霄;张林伟;周存文. 基于仿生微圆结构的汽车吸能盒耐撞性分析[J]. 中国机械工程.

BAI Zhonghao;TAN Wenxiao;ZHANG Linwei;ZHOU Cunwen. Crashworthiness Analysis of Bionic Microcircular Structures for Vehicle Crash Boxes[J]. China Mechanical Engineering.

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