| 汽车顶棚的有限元模态分析与比较 |
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| 引用本文： | 郑文,翁建生. 汽车顶棚的有限元模态分析与比较[J]. 重庆理工大学学报(自然科学版), 2009, 23(4): 7-10 |
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| 作者姓名： | 郑文 翁建生 |
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| 作者单位： | 南京航空航天大学车辆工程系; |
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| 基金项目： | 江苏省基础研究计划(自然科学基金)资助项目(P0716-051);;南京航空航天大学“十一五”研究生人才培养规划项目(KCJS0807) |
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| 摘 要： | 应用ANSYS软件对某型汽车顶棚的凸面和弧形结构加强方案进行模态分析,讨论了凸面宽度和高度、凸面个数和弧形高度对顶棚固有频率及振型的影响.结果表明,顶棚固有频率随凸面宽度和高度、凸面个数及弧形高度的增加而增加;凸面加强后的顶棚振型基本不变,但弧形加强后的振型变化很大.通过对2种加强方案进行比较,发现弧形加强对固有频率的提高要远大于凸面加强.
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| 关 键 词： | 汽车顶棚 模态 固有频率 有限元 |
Modal Analysis and Comparison of Vehicle Ceiling with Finite Element Method |
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| ZHENG Wen,WENG Jian-sheng. Modal Analysis and Comparison of Vehicle Ceiling with Finite Element Method[J]. Journal of Chongqing University of Technology(Natural Science), 2009, 23(4): 7-10 |
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| Authors: | ZHENG Wen WENG Jian-sheng |
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| Affiliation: | Department of Vehicle Engineering;Nanjing University of Aeronautics and Astronautics;Nanjing 210016;China |
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| Abstract: | Vehicle ceiling modal has important influence on the low-frequency noise in the cab.In this paper,ANSYS is utilized to analyze the modal of convex surface ceiling and arc ceiling.Then the effects of the length,height and number of convex surface and the height of arc on ceiling modal are discussed.The results show that the ceiling natural frequencies increase with the increase of these factors and the strengthened mode shape keeps invariant with convex surface ceiling but different with arc ceiling.By compa... |
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| Keywords: | vehicle ceiling modal natural frequency finite element |
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