摘要
建立基于试验设计理论和改进响应面的纯电动客车车身结构优化设计方法。以研发的纯电动客车车身结构为初始模型,使用参数化设计方法,得到纯电动客车车身结构模型。该方法以ANSYS/Workbench有限元软件的计算结果为基础,针对纯电动客车车身4个封闭力环在车身的位置为控制参数,由拉丁超立方优化设计所得的30次试验及改进响应面方法分析确定筛选参数进而得到最优设计点。根据结果构造车身封闭力环的控制参数与多目标函数的响应面近似模型,分析参数间的交互效应,基于微粒子群算法,建立以应力和1阶模态最小为目标的优化模型,模型应力由优化前的108MPa降低为优化后的91 MPa。对最优设计点的力环位置进行试验研究,得到有限元分析结果计算值与响应面近似值吻合,同时降低了整车振动,提高了乘坐人员的舒适性。表明基于试验设计和响应面的优化设计方法可用于纯电动客车车身结构优化设计,对新能源汽车车身设计提供了理论依据。
The design optimization method for electric bus frame structure is established,based on experimental design theory and response surface approximation.Through taking the electric bus frame structure as the initial model and using parametric design method,the model of electric bus frame structure are gotten.First a significant impact on the electric bus frame structure parameters are filtered out by single factor experimental design,and then the filter parameters of the optimal design point are analyzed and determined by the central composite design and response surface methodology.According the results by ANSYS/Workbench calculated,the electric bus frame structure parameters control parameters and objective function response surface approximation model are constructed,and the interaction effects between the parameters are analyzed.Based on the PSO algorithm,establishes an optimization design with the goal of minimum mass and first-order modal,The body stress was reduced from 108 MPa to 91 MPa.Experimental study on the optimal design position of four force closed loop,AnsysWorkbench calculated values are consistent with the approximation of the response surface,and reduce the vibration of the vehicle,improve the ride comfort have greatly improved in performance.It indicated that the optimal design method based on the experimental design and response surface can be used for optimized the design of electric bus frame and provides a theoretical basis for new energy automobile body design.
作者
王钰明
顾添翼
戴其燕
邓虎
易文武
陈一枭
WANG Yu-ming;GU Tian-yi;DAI Qi-yan;DENG Hu;YI Wen-wu;CHEN Yi-xiao(School of Traffic,Nantong University,Nantong 226019;School of Mechanical and Electronic Engineering,Nantong Open University,Nantong 226019;Nantong FLW Agricultural Equipment Co],Ltd],Nantong 226009;Jiangsu Green Wheel New Energy Automobile Co],Ltd],Nantong 226001;Jiangxi Yichun Bus Factory Co],Ltd],Yichun 330700)
出处
《机械设计》
CSCD
北大核心
2019年第A01期97-103,共7页
Journal of Machine Design
基金
国家自然基金青年基金资助项目(51305004)
南通市科技计划资助项目(MS12018100)
江苏省大学生创新创业训练计划资助项目(201810304039Z)
关键词
电动客车
车身
优化设计
改进响应面法
微粒子群算法
electric motor coach
body skeleton
optimal design
improved response surface methodology
particle swarm optimization
