【摘要】 以某轿车为对象,建立含乘员约束系统整车有限元模型.在LS-DYNA环境下,将整个模型划分为36万个壳单元进行正面碰撞过程数值模拟.对碰撞过程中能量转移、耗散、主要结构的吸能效果、乘驾假人的变形损伤指标进行了分析.将仿真分析结果与碰撞试验测试结果进行对比和评估,验证了含乘员约束系统的整车有限元模型的有效性;含乘员约束系统的汽车碰撞模型及计算机仿真分析方法较真实地反映出实车碰撞的状况和结果,具有实际工程应用价值.更多还原

【Abstract】 Taking a car as the object,a vehicle finite element model including the occupant restraint system was established.In LS-DYNA environment,the whole model was divided into 360,000 shell elements for numerical simulation of the front crashing process.The energy transfer and dissipation,the energy absorption effect of the main structure and the deformation damage index of the driving dummy were analyzed.The comparison between the simulation and the crashing test confirms the effectiveness of the finite element model including the occupant restraint system.The proposed car collision model including the occupant restraint system and the computer simulation method reflect the status and the results of the real vehicle crash,which have some practical value in engineering application.更多还原