计算力学学报Issue(2)：212-216,5.DOI:10.7511/jslx201402012
双圆柱气囊缓冲性能分析
Simulation on impact attenuation capability of bi-cylinder airbags
摘要
Abstract
Based on the finite element method and the control volume method ,it is available to build a model for the impact attenuation of bi-cylinder .Taking the cylindrical airbag with the landing speed of 6 .7m/s ,the diameter of 1m and the height of 2m as an example ,the landing velocity and acceleration are simulated by using the LS-DYNA software .At the same time ,the effect of the elastic modulus ,the ven-ting area and the initial pressure in the airbag on the impact attenuation are also analyzed .T he results show that :(1 ) Increasing the elastic modulus of airbag fabric will significantly improve the shock-absorbing capacity of the airbag ,when the elastic modulus of airbag fabric is under 0 .5GPa;however ,the increasing has few effects on the improvement ,w hen the elastic modulus of airbag fabric exceeds 0 .5GPa .(2) Increasing the initial pressure of the airbag fabric will improve the shock-absorbing capacity of the airbag effectively ,when the pressure is lower than the value of the venting area .关键词
双圆柱气囊/缓冲/控制体积法/有限元法Key words
bi-cylinder airbags/impact attenuation/control volume method/FEM分类
航空航天引用本文复制引用
黄国,黄海明,徐晓亮,李玮洁..双圆柱气囊缓冲性能分析[J].计算力学学报,2014,(2):212-216,5.基金项目
国家自然科学基金（11272042）资助项目． （）
