摘要
针对电动汽车前纵梁轻量化后会降低电动汽车正面碰撞安全性的问题,提出一种综合正面碰撞安全性以及应用成本的前纵梁轻量化优化设计方法。建立了整车简化模型,并将简化模型仿真结果与实车试验结果对比验证了简化模型的有效性,采用了克里金法、遗传算法以及果蝇优化算法对前纵梁进行轻量化优化设计。仿真结果表明,优化后前纵梁质量显著减轻,且整车正面碰撞安全性基本不变,有效解决了电动汽车前纵梁轻量化后会降低电动汽车正面碰撞安全性问题。
To solve the problem that lightweight optimization design of the front side rail of electric car can reduce the frontal impact safety performance of electric car,a lightweight optimization design method of front side rail was proposed considering the frontal impact safety performance and its cost control.A simplified vehicle model was established,and the validity of the simplified model was verified by comparing the simulation results with the real vehicle test results.Kriging method,fruit fly optimization algorithm and genetic algorithm were used to carried out the lightweight optimization design of front side rail.The simulation result shows that after lightweight optimization design of front side rail,the vehicle frontal impact safety performance is basically unchanged and the mass of the front side rail has been significantly reduced,the present method can effectively solve the mentioned problem.
出处
《计算机仿真》
北大核心
2017年第3期142-146,共5页
Computer Simulation
基金
2014国家04重大专项(2014ZX04002-071)
关键词
电动汽车
前纵梁
正面碰撞安全性
轻量化优化设计
Electric car
Front side rail
Frontal impact safety performance
Lightweight optimization design
