基于有限元的某重型商用车车架模态分析及优化

A Finite Element Analysis of Heavy-duty Truck Frame and its Optimization

作为重型汽车的核心部件,车架上安装有发动机、变速器、散热器及驾驶室等主要总成部件,且承受货箱及货物的重量。在车辆运行过程中,车架受力状态复杂,不仅要承受车辆自身的载荷,还要承受来自悬架及路面的激励和载荷。所以,车架的强度设计,直接决定了车辆的使用寿命及寿命周期内的可靠性。对企业来讲,结合传统的可靠性试验数据及方法积累,引进计算机技术并应用大型有限元分析软件,在车辆零部件特别是车架等关键部件的早期可靠性研究方面,具有十分重要的意义。

A Finite Element Analysis of Heavy-duty Truck Frame and its Optimization Heavy-duty truck frame is one of the key load-support components that play a critical role in operating safety and vehicle’s capability. This article introduced how to conduct a finite element analysis of the frame’s various dynamic features, and determine and optimize its dynamics in low-frequency condition through the combination of pump-frequency of both road condition and the engine, so that the movement of the frame will not be on the same pattern. The result of such analysis will be helpful in improving the frame’s dynamics, which will avoid occurrence and happens of resonance while in operation or in idle-condition.