Dynamic Stiffness Chain Modeling and Forward Conceptual Design of Vehicle Body

China Mechanical Engineering

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Dynamic Stiffness Chain Modeling and Forward Conceptual Design of Vehicle Body

HU Yufei;LIU Zijian;ZHONG Haolong;QIN Huan

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

Online:2018-05-10 Published:2018-05-09
Supported by:
National Basic Research Program (973 Program) （No. 2010CB328002）
National Natural Science Foundation of China（No. 51475152）

车身动态刚度链建模及正向概念设计研究

胡裕菲;刘子建;钟浩龙;秦欢

湖南大学汽车车身先进设计制造国家重点实验室，长沙，410082

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）
National Basic Research Program (973 Program) （No. 2010CB328002）
National Natural Science Foundation of China（No. 51475152）

Abstract

Abstract: The forward conceptual design processes of vehicle body was presented and a simplified geometric model of vehicle body was established by class A surfaces and the scheme of vehicle general layouts.The locations of 22 main cross-sections were determined.Based on the beam element theory and transfer matrix method， the dynamic stiffness chain model of the vehicle body in modal coordinate system was obtained， then taking the main cross-section properties as the design variables and the relationship between the main cross-section properties and the natural frequency of the vehicle body was established.Body lightweight was taken as the objective function， and the vehicle body static stiffness and natural frequency were taken as constraints for optimization， and using genetic algorithms to solve the optimization problems for the main cross-section properties.The feasibility of the design method of the dynamic stiffness chains was verified by comparing the results of static stiffness simulation and modal analysis with the approximate benchmark cars.

Key words: forward conceptual design of vehicle body, dynamic stiffness chain, transfer matrix method, optimization for vehicle body structure

摘要： 提出了车身正向概念设计流程，由车身A级面及整车总布置方案建立了车身简化几何模型，确定了22个车身主断面位置，并以主断面属性为设计变量，基于梁单元理论与传递矩阵法得到模态坐标系下的车身动态刚度链数学模型，建立了主断面属性与车身固有频率的关系。以车身轻量化为目标函数，以车身静刚度与固有频率为约束条件对车身进行优化，采用遗传算法求解，确定优化后的各主断面属性参数。通过对比近似标杆车的静刚度与模态分析结果验证了动态刚度链设计方法的可行性。

关键词: 车身正向概念设计, 动态刚度链, 传递矩阵法, 车身结构优化

CLC Number:

U463.82

HU Yufei;LIU Zijian;ZHONG Haolong;QIN Huan. Dynamic Stiffness Chain Modeling and Forward Conceptual Design of Vehicle Body[J]. China Mechanical Engineering.

胡裕菲;刘子建;钟浩龙;秦欢. 车身动态刚度链建模及正向概念设计研究[J]. 中国机械工程.

References

[1]ZUO Wenjie.Bi-level Optimization for the Cross-sectional Shape of a Thin-walled Car Body Frame with Static Stiffness and Dynamic Frequency Stiffness Constraints[J].Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering，2015，229（8）：1046-1059.
[2]CHEN Wei，ZUO Wenjie.Component Sensitivity Analysis of Conceptual Vehicle Body for Lightweight Design under Static and Dynamic Stiffness Demands[J].International Journal of Vehicle Design，2014，66（2）：107-123.
[3]ZIMMER H，PRABHUWAINGANKAR M.Implicitly Parametric Crash and NVH Analysis Models in the Vehicle Concept Design Phase[C]//Modeltierung.LS-DYNA Anwender Forum.Hamberg：DYNAmore GmbH，2005：61-69.
[4]王磊，刘莹，乔鑫.基于正向开发流程的车身轻量化设计[J].汽车工程学报，2015，5（6）：461-465.
WANG Lei，LIU Ying，QIAO Xin.Lightweight Design of BIW Based on Positive Development Process[J].Chinese Journal of Automotive Engingeering，2015，5（6）：461-465.
[5]QIN Huan，LIU Zijian，LIU Yu，et al.An Object-oriented MATLAB Toolbox for Automotive Body Conceptual Design Using Distributed Parallel Optimization[J].Advances in Engineering Software，2017，106（4）：19-32.
[6]刘子建，饶俊威，刘瑜，等.基于主断面参数的车身结构刚度链快速求解[J].湖南大学学报（自然科学版），2017，44（2）：1-8.
LIU Zijian，RAO Junwei，LIU Yu，et al.Fast Calculation for the Stiffness Chain Model of Car body Based on Parameters of Main Section[J].Journal of Hunan University（Natural Science），2017，44（2）：1-8.
[7]陈毅强，刘子建.电动汽车车身的回传射线矩阵刚度链分析方法[J].中国机械工程，2016，27（23）：3252-3258.
CHEN Yiqiang，LIU Zijian.Reverberation-ray Matrix Stiffness Chain Analysis Method for Electric Vehicle Body[J].China Mechanical Engineering，2016，27 （23）：3252-3258.
[8]刘保公.碳纤维复合材料纯电动汽车车身结构优化设计[D].长沙：湖南大学，2016.
LIU Baogong.The Optimization Design of Carbon Fiber Reinforced Plastic of Pure Electric Vehicle Body Structure[D].Changsha：Hunan University，2016.
[9]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.
ZHANG Zhiliang.Reverse Engineering Development Technology and Its Application in Foton Heavy Truck Body Development[D].Dalian：Dalian University of Technology，2003
[10]张哲蔚.基于简化模型的车身结构分析与优化[D].上海：同济大学，2009.
ZHANG Zhewei.Analysis and Optimization of Car Body Structure Based on Simplified Model[D].Shanghai：Tongji University，2009.
[11]芮筱亭.多体系统传递矩阵法及其应用[M].北京：科学出版社，2008.
RUI Xiaoting.Transfer Matrix Method of Multibody System and Its Application[M].Beijing：Science Press，2008.
[12]田海豹.基于刚度链方法的车身概念设计研究[D].长沙：湖南大学，2013.
TIAN Haibao.Study on Conceptual Design of Car Body Using Stiffness Chain[D].Changsha：Hunan University，2013.
[13]KODIYALAM S，YANG R J，GU L，et al.Multidisciplinary Design Optimization of a Vehicle System in a Scalable，High Performance Computing Environment[J].Structural & Multidisciplinary Optimization，2004，26（3）：256-263.
[14]刘子建，周小龙，田海豹，等.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，et al.Forward Concept Design of Car Body Using Stiffness Optimal Allocation of Main Sections[J].China Mechanical Engineering，2015，26（6）：837-843.
[15]GAAFAR L K，MASOUD S A.Genetic Algorithms and Simulated Annealing for Scheduling in Agile Manufacturing[J].International Journal of Production Research，2005，43（14）：3069-3085.
[16]陈伦军.机械优化设计遗传算法[M].北京：机械工业出版社，2006.
CHEN Lunjun.Genetic Algorithm for Mechanical Optimal Design[M].Beijing:Machinery Industry Press，2006.
[17]MALEN D E.Fundamentals of Automobile Body Structure Design[M].Pennsylvania：SAE International，2011.

Dynamic Stiffness Chain Modeling and Forward Conceptual Design of Vehicle Body

车身动态刚度链建模及正向概念设计研究

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