基于40%偏置碰撞的车身结构优化  

Body Structure Optimization Based on 40% Offset Collision

作　　者：蒋珂 Jiang Ke(School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学机械工程学院,上海市200093

出　　处：《农业装备与车辆工程》2022年第6期141-145,共5页Agricultural Equipment & Vehicle Engineering

摘　　要：基于C-NCAP的正面40%重叠可变形壁障碰撞试验,针对某纯电动SUV进行整车碰撞仿真试验。从改善车身前端吸能结构、提升乘员舱刚度的角度出发,以乘员舱侵入量、B柱加速度为碰撞安全性能评价指标,对车身进行结构优化。优化后的仿真结果显示,前纵梁和A柱变形形式趋于良好,高压线束未受到挤压,各评价指标基本满足优化目标的要求,优化方案能够显著提升碰撞安全性能,为偏置碰撞工况下的车身设计提供了参考。Based on the C-NCAP frontal 40% overlapping deformable barrier crash test, this paper carried out a vehicle crash simulation test for a pure electric SUV. From the perspective of improving the energy-absorbing structure of the car body and enhancing the stiffness of the occupant cabin, the intrusion of the front cabin and the acceleration of B-pillar are the evaluation indexes of collision safety performance, and the structure optimization of the car body is carried out. After optimization, the simulation results show that the deformation form of the middle rail and pillar A tends to be good, the wire is not squeezed, and the evaluation indexes basically meet the requirements of the optimization objectives. The optimization scheme can significantly improve the collision safety performance, which provides a certain reference significance for the body design under the condition of offset impact.

关 键 词：正面碰撞 偏置碰撞 车身结构 碰撞安全性 

分 类 号：U463.821[机械工程—车辆工程]