汽车仪表盘冲击破坏的数值模拟研究  

Numerical Simulation Study of Impact Damage to the Vehicle Dashboard

作　　者：李磊[1] 宗智[1] 董晓磊[1] 王喜军[1] 聂春 金清政治 

机构地区：[1]大连理工大学工业装备与结构分析国家重点实验室运载工程与力学学部船舶工程学院,大连116024 [2]帝恩上海软件科技有限公司,上海200336 [3]日本大协西川有限公司,日本广岛731-4311

出　　处：《机械设计与制造》2012年第6期12-14,共3页Machinery Design & Manufacture

基　　金：创新研究群体科学基金:海洋环境灾害与结构安全防护(50921001);国家重点基础研究发展计划项目-复杂装备研发数字化工具中的计算力学和多场耦合若干前沿问题(2010CB83270)

摘　　要：应用LS-DYNA的显式积分算法,对汽车副驾附气囊仪表盘的冲击破坏进行了仿真计算。计算中对附气囊仪表盘中FOAM材料分别采用了等效应力失效准则、最大主应力失效准则、有效应变失效准则和最大主应变失效准则四种不同的失效准则进行失效设置,将在这四种不同失效准则下的计算结果与试验结果进行了对比,分析了FOAM材料应用不同的的失效准则对计算结果产生的影响,确定了合适的失效准则,为以后的副驾附气囊仪表盘冲击破坏计算提供了有益的参考。Simulative calculation for the impact damage to airbag dashboard of the vehicle co-pilot was carried out based on LS-DYNA explicit integration algorithm.Several different kinds of failure criteria of the FOAM were used in the calculation,such as equivalent stress failure criteria,major principle stress failure criteria as well as effective strain failure criteria and major principle strain failure criteria,which results were compared with the test results,then the influences of applying different kinds of failure criteria in FOAM material on the calculation results was analyzed and the appropriate failure criterion had been determined,which provides the reference for the simulative calculation of the impact damage to airbag dashboard of the vehicle co-pilot.

关 键 词：仪表盘 冲击破坏 仿真计算 失效准则 

分 类 号：TH16[机械工程—机械制造及自动化]