基于Hypermesh的前副车架结构优化  

Optimization of the structure of front sub frame based on Hypermesh

作　　者：张泽豫 焦志勇[1] 赵鹏[1] 苏仕见 Zhang Zeyu;Jiao Zhiyong;Zhao Peng;Su Shijian(College of Mechanical Engineering,Tianjin University of Science ＆ Technology,Tianjin 30022)

机构地区：[1]天津科技大学机械工程学院,天津300222

出　　处：《汽车实用技术》2018年第19期42-44,100,共4页Automobile Applied Technology

摘　　要：建立某款车型的前副车架的几何模型,运用Hypermesh在已建立的几何模型上基础上进行网格划分,根据实际实际情况定义边界条件与施加载荷,完成有限元模型的建立;分析计算在相应载荷与边界条件下副车架的静态刚度、强度,并进行模态分析;分析表明,副车架强度符合使用要求,但是该车架的二阶模态与发动机中高转速时激振频率较为接近从而可能会产生共振;针对该问题提出相应的优化方案。Absrtact： the geometric model of the front sub-frame of a certain type of vehicle is established, and the finite element model is established by using Hypermesh on the basis of the established geometric model, and the boundary conditions and applied loads are defined according to the actual situation. The static stiffness, strength and modal analysis of the sub-frame under the corresponding load and boundary conditions are calculated, and the results show that the strength of the sub-frame meets the requirements of application. However, the second-order mode of the frame is close to the exciting frequency of the engine at medium and high speed, which may result in resonance. A corresponding optimization scheme is proposed to solve the problem. Keywords： subframe; modal analysis; structural optimization

关 键 词：副车架 模态分析 结构优化 

分 类 号：U463[机械工程—车辆工程]