桁架式车架结构优化与刚度分析
Structural optimization and stiffness analysis of truss frame
饶浩耀 1敖银辉 1张浩川 1张博文浩1
作者信息
- 1. 广东工业大学机电工程学院,广东广州 510006
- 折叠
摘要
以某桁架式车架为研究对象,建立有限元参数化分析模型,对车架进行拓扑和多 目标优化,对优化后的车架整体进行了应力和刚度分析,并通过试验验证了车架的刚度分析结果.初步建立桁架式车架模型,采用ANSYS软件对车架进行拓扑设计得到优化模型,同时以车架关键受力部位为研究对象对车架进行多 目标优化,优化后车架质量减轻0.82 kg;根据实际比赛场地和跑动情况对车架进行工况下的应力分析,在此基础上分析车架的弯曲、扭转刚度,并结合验证性试验着重分析车架的扭转刚度,验证了此桁架式车架具有优异的综合力学性能.
Abstract
In this article,the finite-element model is set up for the parametric analysis on the truss frame;both the topology optimization and the multi-objective optimization are carried out;the optimized frame's stress and stiffness are analyzed,and the results obtained from the stiffness analysis are verified by experiments.Firstly,efforts are made to set up the model of the truss frame,and ANSYS is used for the frame's topology design,in order to work out the optimization model.At the same time,with the focus on the frame's key stress parts,the multi-objective optimization,and the weight of the frame reduces by 0.82 kg after optimization.According to the actual competition field and running conditions,the analysis is conducted on the frame's stress un-der specific working conditions.On this basis,efforts are made to explore the frame's bending and torsional stiffness.In combi-nation with the confirmatory experiment,the frame's torsional stiffness is emphatically analyzed.It is verified that the truss frame has excellent comprehensive mechanical properties.
关键词
桁架式车架/多目标优化/结构应力/工况/扭转刚度/试验验证Key words
truss frame/multi-objective optimization/structural stress/working condition/torsional stiffness/experimental verification引用本文复制引用
出版年
2024
NETL
NSTL
万方数据