基于Hypermesh的整车正碰分析

文章构建车辆的有限元模型,进行正面100%刚性壁障碰撞的模拟仿真,来分析车辆结构的潜在缺陷和合理性,主要内容为:(1)介绍整车中各个铰链以及加速度传感器的建立,对整车各个结构部件进行了连接设置,对整车的接触设置进行了说明,对材料的设置、刚性墙的建立以及控制卡片的导入进行说明。(2)利用Hypermesh和LS-DYNA对模型进行计算,利用HyperView查看输出结果。(3)根据仿真计算的数据,对模型的合理性进行评价分析,发现前围板入侵量和B柱右侧加速度的指标偏大,影响了汽车的安全性能。

Analysis of Vehicle Frontal Collision Based on Hypermesh

Full-text finite element model,100% self-confrontation,wall-fault-like imitation,future analysis,implicit latent rationality.Main contents:(1) The theoretical basis of the finite element method is introduced,and the establishment of each hinge and acceleration sensor in the whole vehicle is introduced.The structural components of the whole vehicle are connected and set,and the contact setting of the whole vehicle is explained.The establishment of a rigid wall and the introduction of control cards are described.(2) Calculate the model using Hypermesh and LS-DYNA,and use HyperView to view the output consequence.(3) According to the data calculated by the simulation,the rationality of the model is evaluated and found that the intrusion of the dash panel and the acceleration of the right side of the B-pillar are too large,which affects the safety performance of the car.