北京交通大学学报2013，Vol.37Issue(4)：139-142,4.
单圆柱气囊缓冲性能探讨
Study on impact attenuation capability of cylindrical airbag
摘要
Abstract
Based on finite element analysis(FEA) and control volume method(CV),the model of cylindrical airbag is made.Taking the cylindrical airbag which has the landing speed of 6.7 m/s,the radius of 1 m and the height of 2 m for an example,the velocity and acceleration of the airdrop equipment during landing are calculated by LS-DYNA software,and the impact to buffering performance caused by the venting area,the venting critical value and the initial pressure is also analyzed.The result shows that changing the venting area and the venting critical value can minimize the maximum overload.In the case that the initial pressure does not exceed the venting critical value,increasing the initial pressure can improve the impact attenuation capability of cylindrical airbags efficiently.关键词
圆柱形气囊/缓冲/控制体积法/有限元法Key words
cylinder airbag/ impact attenuation/ CV/ FEA分类
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黄国,李玮洁,黄海明..单圆柱气囊缓冲性能探讨[J].北京交通大学学报,2013,37(4):139-142,4.基金项目
国家自然科学基金资助项目(11272042) （11272042）
