铝蜂窝串联缓冲结构静态压缩仿真与试验研究

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振动与冲击 ›› 2013, Vol. 32 ›› Issue (9) : 50-56.

论文

铝蜂窝串联缓冲结构静态压缩仿真与试验研究

李萌1，刘荣强1，罗昌杰2，郭宏伟1，丁北辰1

作者信息 +

Numerical and experimental studies of series aluminum honeycomb structures under quasi-static load

LI Meng1，LIU Rong-qiang1，LUO Chang-jie2，GUO Hong-wei1，DING Bei-chen1

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文章历史 +

摘要

为更好设计多级铝蜂窝缓冲结构，为星球着陆器缓冲结构设计提供理论依据，对串联式铝蜂窝结构进行静态压缩的仿真与试验研究。针对仿真模型规格的多样性，为提高仿真效率，基于PCL语言编写参数化建模分析程序，实现有限元模型的自动建立。通过与理论公式及试验结果对比，证明有限元模型可准确计算串联铝蜂窝缓冲结构受静态压缩载荷作用下的平均应力及极限应变值，能准确提供整个变形过程铝蜂窝所受载荷信息。与传统的试验方法相比，该有限元仿真模型计算成本低、不受试验条件限制，且有较高的计算精度。仿真与试验研究表明，对同一尺寸蜂窝，与单个铝蜂窝缓冲器相比，串联式组合铝蜂窝缓冲器能吸收更多的能量。

Abstract

Aluminum honeycomb structure with special structural and functional properties, which has been widely used as energy-absorbers. To design multi-level aluminum honeycomb buffer structures better and provide theoretical basis on designing space landing module energy-absorber structures, this paper presents numerical and experimental studies on series aluminum honeycomb structures with quasi-static load. The numerical models used here with various length and foil thickness of honeycomb cell, Patran parameters design language (PCL) provides convenience to automatically accommodate the parametrized FE model to different designs. Through investigated on experiments and theoretical analysis, the numerical model can obtain plate stress and limited strain and show loads subjected on aluminum honeycomb during the whole deformation process accurate. Numerical simulation has the advantage of low cost and high precision compared with experiments. Results from numerical simulations and experiments show that series honeycomb structures can absorb more energy than single honeycomb structure.

导出引用

李萌;刘荣强;罗昌杰;郭宏伟;丁北辰. 铝蜂窝串联缓冲结构静态压缩仿真与试验研究[J]. 振动与冲击, 2013, 32(9): 50-56

LI Meng;LIU Rong-qiang;LUO Chang-jie;GUO Hong-wei;DING Bei-chen. Numerical and experimental studies of series aluminum honeycomb structures under quasi-static load[J]. Journal of Vibration and Shock, 2013, 32(9): 50-56