Research on Application of Multidisciplinary Design Optimization for Hot Stamp Body Frame Lightweight

Abstract

Abstract:

Sampling points were obtained by using optimal Latin squares design of experimental method. The MDO(multidisciplinary design optimization) approximated system with the body-in-white stiffness, body-in-white key area strength, frontal crashworthiness had been constructed by means of moving least-squares response surface approximate method. The thickness of the hot stamp rail member and the reinforcement panel had been optimized by using sequential quadratic programming method to meet the stiffness of body-in-white, body-in-white key area strength and frontal crashworthiness. Meanwhile, the weight of the body frame is also reduced.

Key words: multidisciplinary design optimization, response surface model, lightweight, hot stamp

摘要：

采用最优拉丁方试验设计方法进行样本数据设计,采用移动最小二乘响应面方法构建白车身扭转刚度、白车身关键区域强度、整车正碰多学科系统的近似模型。利用连续二次规划优化方法对此近似模型进行优化,将热成形板的前中后大梁厚度、大梁内部加强板厚度作为设计变量,在满足正碰设计要求、白车身强度刚度要求的同时,显著减小了车架的质量。 



关键词:

多学科设计优化, 响应面法, 轻量化, 热成形

CLC Number:

TH123



HU Chao-Hui, CHENG Ai-Guo, ZHONG Zhi-Hua. Research on Application of Multidisciplinary Design Optimization for Hot Stamp Body Frame Lightweight[J]. China Mechanical Engineering, 2010, 21(06): 728-732.

胡朝辉, 成艾国, 钟志华.

多学科优化设计在热成形车架轻量化中的应用

[J]. 中国机械工程, 2010, 21(06): 728-732.

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