包含悬架系统的整车结构分析与改进

Contains the Suspension System of Vehicle Structure Analysis and Improvement

在总结前人车身有限元分析方法基础之上,提出采用有限元技术中的MPC方法模拟悬架系统的铰链连接,从而将该传力复杂的悬架系统整合到车身有限元模型当中,建立一个完全弹性的整车有限元模型。并根据车辆实际运行条件定义了五个计算工况进行有限元分析。然后,将有限元计算结果与电测试验作对比,证明该有限元计算方法的可行性。最后,针对结构分析所暴露的扭簧安装座结构强度不足的问题,对其结构进行了重新设计。对比修改前后的结构,发现修改后的扭簧座结构不仅满足了设计所需的强度要求,而且结构重量还得以减轻。

Based on the predecessors＇car body finite element analysis method,it put forward that using MPC method of the finite element technology to simulate the suspension system hinge link ,and integrating the suspension system that transferred force complex into finite elements model of car body. It established a completely elastic finite element model of the vehicle. Defined five working conditions use for finite element analysis according to vehicle operation conditions. Then, taking the finite element calculation results compared with electrical measuring test,it proved the feasibility of the finite element method. Finally aiming at the problem that installation of the torsion spring was poor strength,redesigning the structure. Comparing with the old structure ,discovered the redesigned structure which not only met the requirements of design strength,but also reduced the weight of the structure.