载货车辆车架性能的数值仿真分析与研究

摘要

The finite element model of the frame system is built based on the three dimensional numerical model and the platform of Hyperwork.The static analysis of the frame is carried out to get its stiffness and strength.In order to simulate the actual opera-tion situation of the truck and determine the reliability of the frame structure ,the finite element model of the frame is not only aimed at the freedom modal analysis ,but also is aimed at the constraint modal analysis.Then,harmonic analysis and transient a-nalysis of the frame need to be undertaken in order to study the dynamic stability of the frame system.Finally,this study provides reference for frame ' s optimization of frame structure.%以某载货车辆的车架为研究对象,基于三维数值模型和Hyperwork平台建立该车架系统的有限元模型,对车架进行静力分析,得到其刚度与强度且满足设计要求,进而分析其自由模态和包含悬架的车体系统的约束模态,获得更贴近车架实际运行中的振动属性.为进一步研究车架系统的动态稳定性,对车架进行谐响应分析以及瞬态动力学分析,获得车架不同部位的受力状态.综合分析结果表明,车架的静、动态特性符合设计期望,为车架性能校核和结构改进提供参考.