面向轻量化的车身高强度钢覆盖件刚度仿真

Numerical Stiffness Simulation of Autobody Cover Panel for High Strength Steel Based on Lightweight

摘要:

基于壳体有限元理论，在满足车身设计规范前提下，进行车身外覆盖件轻量化定量仿真研究.以发动机罩板为对象，根据车身结构安全性能要求，建立抗弯和抗扭刚度仿真模型.以ST14传统钢板材料仿真结果为比较基准，进行以BH340高强度烘烤硬化钢板为替代材料的发动机罩板轻量化开发.结果表明：在满足车身刚度设计规范前提下，该方案能实现发动机罩板减重14.28%，满足轻量化设计要求.

Abstract:

Based on shell finite element theory and autobody design standards,numerical material lightweight simulation of autobody cover panel is presented by using high strength baked hardening steel on engine hood.Bending stiffness and torsion stiffness analysis model on structural simulation is constructed.By replacing the traditional carbon steel ST14 with high strength steel BH340,the weight of engine hood panel can be reduced by 14.28% while the requirement of autobody stiffness design standard is satisfied.BH340 is recommanded for engine hood as new lightweight material.