摘要
白车身是汽车的重要组成部分,许多汽车制造业已经把白车身轻量化设计作为重要研究方向之一。如果能对白车身进行轻量化设计,就能达到节能减排的目的。以某白车身为研究对象,基于自适应响应面方法对白车身模型进行优化求解。首先利用有限元法获得白车身的模态、刚度和强度,并通过模态和刚度的灵敏度分析筛选15个钣金件作为变量;利用田口实验进行15因子3水平实验设计,根据田口实验数据创建响应面;然后使用最小二乘回归和移动最小二乘法进行响应面拟合,基于自适应响应面方法对其进行优化求解,并进行仿真实验对比。结果表明,使用本文方法可以将白车身质量减重18.924 kg,减重了4.7369%,并且利用此方法进行的轻量化设计使得白车身的3个静强度工况的最大应力均有所下降,并在满足刚度和强度条件下,实现了白车身轻量化要求。
The body in white is an important part of the automobile,and many automobile manufacturers have taken the body in white as one of the important research directions.If lightweight design can be applied to the white body,it can achieve the purpose of energy saving and emission reduction.A car body in white was taken as the research object,and the adaptive response surface method was used to optimize and solve the car body in white.Firstly,the modal,stiffness and strength of the body in white were obtained by the finite element method,and 15 sheet metal parts were selected as variables by modal and stiffness sensitivity analysis.The 15-factor 3-level experiment was designed by the Taguchi experiment,and the response surface was created according to Taguchi experiment data.Then,the least square regression and moving least square method were used to fit the response surface,the adaptive response surface method was used to optimize the solution,and the simulation experiment was compared.The results show that the proposed method can reduce the weight of the body in white by 18.924 kg,which is 4.7369%,and realize the lightweight requirements of the body in white under the conditions of stiffness and strength.
作者
侯俊剑
王泳
钟玉东
赵登峰
何文斌
周放
HOU Yong-jian;WANG Yong;ZHONG Yu-dong;ZHAO Deng-feng;HE Wen-bin;ZHOU Fang(School of Mechanical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450000,China)
出处
《科学技术与工程》
北大核心
2024年第8期3416-3425,共10页
Science Technology and Engineering
基金
河南省自然科学基金(232300420090)
河南省科技攻关重点项目(222102240077,232102221040)。
关键词
白车身
轻量化
模态分析
响应面
body in white
lightweight
modal analysis
response surface method
