轮胎模型逼真度对偏置碰撞仿真的影响分析  

Analysis on the Influence of Tire Model Precision to the Offset Impact Simulation

作　　者：曹立波[1] 张滕滕[1] 邵飞达[1] 李碧浩[2] 

机构地区：[1]湖南大学汽车车身先进设计制造国家重点试验室,湖南长沙410082 [2]上海汽车集团股份有限公司技术研究中心,上海201804

出　　处：《汽车工程学报》2011年第1期48-52,共5页Chinese Journal of Automotive Engineering

基　　金：教育部长江学者与创新团队发展计划资助项目(531105050037);湖南大学汽车车身先进设计制造国家重点实验室自主课题(60870004)

摘　　要：根据国内某量产车参数建立了具有旋转自由度的轮胎有限元模型,利用该模型开展整车40%偏置正面碰撞仿真分析,研究了轮胎的气压、旋转自由度和轮辋的刚度等3个主要轮胎模型特性参数对整车模型逼真度的影响。通过调整轮胎模型参数,并对比仿真结果与试验结果得知,这些特性参数对整车加速度峰值大小、防火墙最大侵入量和门框受力大小均有明显的影响,通过调整得到了一组逼真度较高的轮胎模型参数。A finite element model of vehicle tire with rotational degrees of freedom was developed according to the data on a domestic production car. Three major characteristic parameters, tire pressure, rotational degrees of freedom, and rim stiffness were varied to analyze their influence on the fidelity of vehicle crash simulation tbr the frontal impact with 40% offset. The results show that these characteristic parameters obviously affect the maximum vehicle acceleration, the maximum firewall intrusion and the load from the sill. In addition, a tire model with good fidelity is obtained by adjusting three characteristic parameters.

关 键 词：轮胎 耐撞性 有限元仿真 逼真度 

分 类 号：U463.341[机械工程—车辆工程]