基于响应面方法的微型车车门模态分析与优化  

Structural Modal Analysis and Optimization of Mini-car Doors Based on Response Surface Method

作　　者：秦训鹏[1,2] 冯佳伟[1,2] 王永亮[1,2] 金磊[1,2] 

机构地区：[1]武汉理工大学汽车工程学院,武汉430070 [2]现代汽车零部件技术湖北省重点实验室,武汉430070

出　　处：《中国机械工程》2017年第14期1690-1695,共6页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(51605353);教育部创新团队发展计划资助项目(IRT13087);武汉理工大学自主创新研究基金优秀博士培育项目(WUT:2016-YB-025)

摘　　要：应用灵敏度分析方法和响应面法,优化车门结构模态。建立车门的有限元数值仿真模型,并通过约束模态测试对仿真模型进行标定。对车门第三阶模态频率关于车门板件厚度的灵敏度进行了研究,筛选出高敏板件并以这些板件的厚度为设计变量,运用面心复合设计方法获取样本点,构建了车门第三阶模态频率的二阶显式响应面函数。基于此响应面函数进一步建立了优化模型,结果显示改进车门厚度后,车门和白车身模态分离,同时实现省材5.83%。Sensitivity analysis method and response surface method were used to optimize structural modal of the mini-car doors.A finite element numerical simulation model was established,and the simulation model was calibrated by restraint modal tests.In order to screen out high sensitive plates,a sensitivity analysis for the thicknesses of door plates was proposed based on door＇s third order modal frequency.Sample points were obtained by face centered composite design while design variables were from the thicknesses of high sensitive plates,and a two order explicit response surface function of vehicle door＇s third order modal frequency was established.According to the response surface function,an optimization model was established.The final results show that the modal frequency matching of the door and body in white is optimized after changing the door thicknesses,while materials are saved about 5.83%.

关 键 词：灵敏度分析 响应面 模态 优化 

分 类 号：U467[机械工程—车辆工程]