| 基于刚度和模态灵敏度分析的轿车车身轻量化研究 |
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| 引用本文： | 段月磊,毕传兴.基于刚度和模态灵敏度分析的轿车车身轻量化研究[J].噪声与振动控制,2010,30(6):79-82. |
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| 作者姓名： | 段月磊 毕传兴 |
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| 作者单位： | 合肥工业大学-机械与汽车工程学院-噪声振动工程研究所 |
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| 基金项目： | 国家863重大科技专项 |
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| 摘 要： | 以某轿车白车身为例,建立有限元模型,以车身结构的刚度和模态有限元计算为基础,经灵敏度分析方法确定优化设计变量,以车身结构质量的最小化为目标,在保证车身刚度和模态性能的前提下,优化车身零件的厚度,从而实现车身结构的轻量化,车身减轻的重量为原来的3.6%,车身结构的刚度和主要模态频率也都获得不同程度的提高。
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| 关 键 词： | 有限元模型 刚度 模态 灵敏度分析 轻量化 |
| 收稿时间： | 2010-1-22 |
| 修稿时间： | 2010-3-23 |
Study on Weight-Reduction of Car-Body Based on Stiffness and Modal Sensitivity Analysis |
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| DUAN Yue-lei,BI Chuan-xing.Study on Weight-Reduction of Car-Body Based on Stiffness and Modal Sensitivity Analysis[J].Noise and Vibration Control,2010,30(6):79-82. |
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| Authors: | DUAN Yue-lei BI Chuan-xing |
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| Affiliation: | (Institute of Sound and Vibration Research,Hefei University of Technology, Key Laboratory of Automobile NVH and Reliability of Anhui Province,Hefei 230009,China) |
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| Abstract: | A FEM model for a car is built. On the basis of body stiffness and modal analysis, the optimization design variables are determined through stiffness and modal sensitivity analysis. Then 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. |
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| Keywords: | FEM stiffness modal sensitivity analysis weight-reduction |
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