| 基于刚度和模态性能的轿车车身轻量化研究 |
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| 引用本文： | 韩旭,朱平,余海东,郭永进,林忠钦,高新华,顾镭,杨晋,徐有忠.基于刚度和模态性能的轿车车身轻量化研究[J].汽车工程,2007,29(7):545-549. |
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| 作者姓名： | 韩旭 朱平 余海东 郭永进 林忠钦 高新华 顾镭 杨晋 徐有忠 |
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| 作者单位： | 1. 上海交通大学机械与动力工程学院,上海,200240
2. 奇瑞汽车有限公司汽车工程研究院,芜湖,241009 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 以某型轿车为例,建立车身的有限元模型,应用以灵敏度分析为基础的修正可行方向优化算法,在保证车身刚度和模态性能不降低的前提下,以车身结构质量的最小化为目标,优化车身零件的厚度,从而实现车身结构的轻量化,车身减轻的质量为原来的6.22%,车身结构的弯曲和扭转刚度也都获得不同程度的提高,主要模态频率变化在1Hz以内。
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| 关 键 词： | 轿车车身 轻量化 刚度 模态频率 有限元法 |
| 修稿时间： | 2006-07-042006-09-15 |
A Study on the Weight-reduction of Car-body with Required Stiffness and Modal Performances |
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| Han Xu,Zhu Ping,Yu Haidong,Guo Yongjin,Lin Zhongqin,Gao Xinhua,Gu Lei,Yang Jin,Xu Youzhong.A Study on the Weight-reduction of Car-body with Required Stiffness and Modal Performances[J].Automotive Engineering,2007,29(7):545-549. |
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| Authors: | Han Xu Zhu Ping Yu Haidong Guo Yongjin Lin Zhongqin Gao Xinhua Gu Lei Yang Jin Xu Youzhong |
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| Institution: | 1. School of Mechanical and Powwer Engineering, Shanghai Jiao Tong University, Shanghai 200240 ;2. Automotive Engineering Research Institute, Chery Automobile Corporation Limited, Wuhu 241009 |
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| Abstract: | A finite element model for a car is built.By using the modified feasible direction algorithm based on sensitivity analysis,an optimization on the thickness of body panels is conducted with an objective of minimizing the mass of body structure and a constraint of meeting the requirements of stiffness and modal performance.So the weight reduction of car body is realized with the total mass of the auto body reducing by 6.22% while the bending and torsion stiffness rising to different degrees and the change in modal frequency less than 1 Hz. |
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| Keywords: | Car body Weight reduction Stiffness Modal frequency FEM |
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