基于接头灵敏度分析的驾驶室刚度模态优化
Stiffness-mode optimization of cab based on joint sensitivity analysis
林长波 1汤金帅 2许恩永 1刘夫云 2杜中刚 2韩国鑫2
作者信息
- 1. 东风柳州汽车有限公司商用车技术中心,广西柳州 545005
- 2. 桂林电子科技大学机电工程学院,广西桂林 541004
- 折叠
摘要
针对商用车驾驶室接头结构设计不合理的问题,文中提出一种基于接头灵敏度分析的驾驶室刚度模态优化方法.首先,从驾驶室有限元模型中截取所需接头,并采用有限元分析技术对其进行力学特性分析,找出接头结构的关键控制因素;其次,以弹性模量为设计变量进行接头灵敏度分析,找出对驾驶室刚度模态影响较大的接头结构;然后,选用第3代遗传算法对该优化问题进行多目标优化;最后,采用TOPSIS算法从帕累托前沿解中选取更符合用户偏好的驾驶室刚度模态优化方案.优化结果表明:在驾驶室质量基本不变的情况下,驾驶室刚度模态均有较大提升.
Abstract
In this article,since the structural design of the joint for a commercial vehicle's cab is unreasonable,the stiff-ness-mode optimization of the cab is conducted based on the joint sensitivity analysis.Firstly,the required joint is intercepted from the cab's finite-element model.The finite-element analysis is conducted on the joint's mechanical properties,so as to find out the influencing factors of joint structure.Secondly,the joint sensitivity analysis in conducted with the elastic modulus as the design variable,so as to find out the joint which has great influence on the cab's stiffness and mode.Thirdly,the third-genera-tion-genetic-algorithm is used for multi-objective optimization.Finally,the TOPSIS algorithm is used to work out the scheme of cab mode-stiffness optimization,which is more line with user preference from the Pareto front.The results indicate that the cab's stiffness and mode greatly improve when the condition of the cab's mass remains unchanged.
关键词
接头力学特性/接头灵敏度分析/多目标优化/TOPSIS算法Key words
joint mechanical property/joint sensitivity analysis/multi-objective optimization/TOPSIS algorithm引用本文复制引用
基金项目
广西创新驱动发展专项项目(AA18242036)
桂林电子科技大学研究生教育创新计划资助项目(2021YCXS005)
出版年
2024
NETL
NSTL
万方数据