碰撞条件下的保险杠系统轻量化研究  

Research on Lightweight of Bumper System under Collision Performance

作　　者：刘陈 孙后环[1] LIU Chen;SUN Houhuan(School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing Jiangsu 211800,China)

机构地区：[1]南京工业大学机械与动力工程学院,江苏南京211800

出　　处：《汽车零部件》2021年第1期7-12,共6页Automobile Parts

基　　金：江苏省六大人才高峰高层次人才资助项目(2012-ZBZZ-047)。

摘　　要：前保险杠系统的轻量化可以减小能源消耗,降低成本,但须满足相关碰撞安全标准。在有限元软件HyperMesh中构建前保险杠系统模型,进行低速正面碰撞仿真验证模型的可靠性。定义变量、确定优化目标和约束条件后,创建Kriging代理模型,验证模型正确性。通过NSGA-II算法对代理模型优化求解,选取最优解,并根据仿真结果对最优解进行验证。结果表明:在保证碰撞性能要求的前提下,轻量化效果明显,验证了结构优化的可行性,为后续对保险杠系统的研究设计提供了参考。The lightweight of front bumper system can reduce energy consumption and cost,but must meet the relevant collision safety standards.The front bumper system model was constructed in the finite element software HyperMesh,and the reliability of the model was verified low-speed frontal collision simulation.After defining variables,determining optimization objectives and constraints,Kriging agent model was created and the correctness of the model was verified,then the agent model was optimized and solved through NSGA-II algorithm.The optimal solution was selected and verified according to the simulation results.The result shows that the lightweight effect is obvious on the premise of ensuring the collision performance requirements,and the feasibility of structural optimization is verified,which provides reference for the subsequent research and design of the bumper system.

关 键 词：保险杠系统 轻量化 碰撞测试 NSGA-II优化 

分 类 号：U463.83[机械工程—车辆工程]