摘要
对汽车侧面壳体抗压强度的设计,能够有效保证车内人员生命安全。对汽车侧面壳体的优化设计,需要求解模型单元节点位置和应变率影响函数,计算侧面壳体的接触力,完成对汽车壳体强度的优化。传统方法分析了侧面壳体近侧和远侧之间的抗压性能差异,对汽车有限元模型进行验证,但忽略了计算侧面壳体的接触力,导致设计效果不理想。提出基于有限元分析的小型汽车侧面壳体抗压性能测试优化方法,首先将CAD系统创建的小型汽车侧面壳体三维模型导入有限元VPG软件中,建立各个构件特征的抗压性能有限元模型;其次求解模型单元节点位置随时间变化关系和应变率影响函数,并计算侧面壳体的接触力;最后对小型汽车侧面抗压性能测试方法进行优化设计。仿真测试结果证明,所提方法小型汽车侧面壳体抗压性能测试精度较高,符合实际工况。
This article proposes a test optimization method for compression property of mini-car side shell based on finite element analysis. Firstly, a three-dimension model of mini-car side shell created by CAD system is impor- ted into VPG software of finite element to found finite element model of compression property of each component, and then relationship between location of model unit node and time and influence function of strain rate is solved, and contact force of side shell is calculated. Finally, the optimization design for test method of compression property of mini-car side is achieved. The simulation results demonstrate that the method in this article has high accuracy for compression property test of mini-car side shell and conforms to actual working condition.
出处
《计算机仿真》
北大核心
2018年第3期102-105,199,共5页
Computer Simulation
关键词
汽车
侧面壳体
抗压强度
优化设计
Automobile
Side shell
Compression strength
Optimization design
