基于主断面刚度优化分配的车身正向概念设计

中国机械工程 ›› 2015, Vol. 26 ›› Issue (6): 837-843.

基于主断面刚度优化分配的车身正向概念设计

刘子建;周小龙;田海豹;吕程

湖南大学汽车车身先进设计制造国家重点实验室,长沙,410082

出版日期:2015-03-25 发布日期:2015-03-24
基金资助:
国家重点基础研究发展计划（973计划）资助项目(2010CB328002);国家自然科学基金资助项目(51475152)

Forward Conceptual Design of Car Body Using Stiffness Optimal Allocation of Main Sections

Liu Zijian;Zhou Xiaolong;Tian Haibao;Lü Cheng

Hunan University, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Changsha,410082

Online:2015-03-25 Published:2015-03-24
Supported by:
National Program on Key Basic Research Project (973 Program)（No. 2010CB328002）;National Natural Science Foundation of China（No. 51475152）

摘要/Abstract

摘要：

提出了基于刚度优化分配的车身正向概念设计流程。根据车身结构拓扑与刚度分布紧密关联和相互影响的特点，提出了车身刚度链设计方法。建立了基于梁单元的车身简化模型，确定了18个主断面位置,建立了以主断面为节点的车身刚度链数学模型。针对车身刚度分布问题，研究了基于车身刚度链的整体刚度优化分布方法，建立了车身弯曲刚度优化分布问题的数学模型，利用遗传算法进行了求解，确定了各主断面的材料分布。与已有近似标杆车CAE模型的刚度仿真结果进行对比,验证了该刚度优化分布方案的合理性以及车身刚度链方法的有效性。

关键词: 车身概念设计, 简化模型, 车身刚度链, 刚度优化分配

Abstract:

A top-down conceptual design process was proposed based on the stiffness optimum distribution in car-body conceptual design phase. According to the features that the car-body structural topology was closely related to and mutually influences with stiffness distribution, a method of car-body stiffness chain was proposed. A simplified car-body wireframe model was established, 18 main sections were defined and the mathematic model of car-body stiffness chain with main sections as nodes was built.Stiffness optimum distribution was studied based on car-body stiffness chain and the mathematic model of car-bodybending stiffness optimum distribution was built and then solved by genetic algorithm to obtain the material distribution in each main section. The rationality of stiffness optimum distribution and the availability of car-body stiffness chain were verified by comparing with the CAE analyses of approximate benchmarking car.

Key words: conceptual design of car body;simplified model;car-body stiffness chain;stiffness , optimum , distribution

中图分类号:

U463.82

刘子建, 周小龙, 田海豹, 吕程. 基于主断面刚度优化分配的车身正向概念设计[J]. 中国机械工程, 2015, 26(6): 837-843.

Liu Zijian, Zhou Xiaolong, Tian Haibao, Lü Cheng. Forward Conceptual Design of Car Body Using Stiffness Optimal Allocation of Main Sections[J]. China Mechanical Engineering, 2015, 26(6): 837-843.

参考文献

[1]Lan Fengchong,Chen Jiqing,Lin Jianguo.Research on Parameterized Modeling and Application for Car[J].Computer Integrated Manufacturing System,2005,2(11):19-20.
[2]Ford Motor Company.Guidelines for Modeling an Automobile Body for NVH Analysis-Simplified Models[R].California:The University of California,1995.
[3]Torstenfelt B,Klurbring A.Conceptual Optimal Design of Modular Car Product Families Using Simultaneous Size and Topology Optimization[J]. Finite Elements in Analysis and Design,2007,43:1050-1061.
[4]迟瑞丰,胡平,侯文彬,等.概念设计阶段的车身结构分析[J].汽车工程,2010,32(3):209-212.
Chi Ruifeng,Hu Ping,Hou Wenbin,et al.Body Structure Analysis of the Conceptual Design Stage[J].Automotive Engineering, 2010, 32(3): 209-212.
[5]邢子敬,侯文彬,刘斌,等.概念设计中梁截面对车身刚度影响的研究[J].汽车技术,2009(10):21-24.
Xing Zijing,Hou Wenbin,Liu Bin,et al.Conceptual Stiffness Design of the Beam Cross-section of the Body Research[J]. Automotive Technology,2009(10):21-24.
[6]任建英.概念设计阶段轿车白车身结构定性仿真模型的建立研究[D].上海:上海交通大学,2009.
[7]张志亮.逆向工程开发技术及其在福田重卡车身开发中应用[D].大连:大连理工大学,2003.
[8]张欣宇.基于逆向工程的汽车外形设计方法的应用研究[D].武汉:武汉理工大学,2008.
[9]刘庆潭,倪国荣.结构分析中的传递矩阵法[M].北京:中国铁道出版社,1997.
[10]李青宁.变截面杆元传递矩阵法[J].西安建筑科技大学学报(自然科学版),2001,23(1):18-23.
Li Qingning.Variable Cross Bar Element Transfer Matrix Method[J].Xi'an University of Architecture & Technology(Natural Science), 2001, 23(1):18-23.
[11]王世忠.结构力学与有限元法[M].哈尔滨:哈尔滨工业大学出版社,2003.
[12]王小平,曹立明.遗传算法理论、应用与软件实现[M].西安:西安交通大学出版社,2002.
[13]张平.车身结构主断面对车身静刚度影响的研究[D].上海:同济大学,2006.
[14]姚乾华,陈昌明.基于车身主断面力学特性的灵敏度分析[J].车辆与动力技术,2007(4):36-38,42.
Yao Qianhua,Chen Changming.Main Body Section Based on the Sensitivity Analysis of the Mechanical Properties of the Vehicle and Power Technology,2007(4):36-38,42.