| 车身结构与车内空腔流固耦合系统的模态分析 |
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| 引用本文： | 陈江红. 车身结构与车内空腔流固耦合系统的模态分析[J]. 计算机辅助工程, 2007, 16(3): 101-105 |
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| 作者姓名： | 陈江红 |
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| 作者单位： | 同济大学,汽车学院,上海,201804 |
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| 摘 要： | 为研究汽车的振动噪声特性,利用ANSYS软件采用板壳、梁和流体单元建立某车身结构及车内空腔的有限元模型,其中,将车身结构作为弹性体,乘员室内的空气作为流体.通过对车身结构、车内空腔流体及车身与车内空腔流体的耦合结构进行模态分析,并对比计算结果,得到它们之间的相互关系,有利于整车振动和噪声特性的研究.
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| 关 键 词： | 汽车车身 振动 噪声 模态分析 流固耦合系统 有限元 ANSYS |
| 文章编号： | 1006-0871（2007）03-0101-05 |
| 收稿时间： | 2007-05-29 |
| 修稿时间： | 2007-05-292007-07-03 |
Modal analysis on fluid-structure coupling system ofautomotive body structure and cavity |
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| CHEN Jianghong. Modal analysis on fluid-structure coupling system ofautomotive body structure and cavity[J]. Computer Aided Engineering, 2007, 16(3): 101-105 |
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| Authors: | CHEN Jianghong |
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| Affiliation: | College of Automotive Eng. , Tongji Univ. , Shanghai 201804, China |
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| Abstract: | To study the vibration and noise characteristics of automobile, the finite element model of an automotive body structure and cavity is established with shell, beam and fluid element by using ANSYS. In the model, the body structure is taken as elastic body and the air in passenger compartment is taken as fluid. The modal analysis is done for automotive body, fluid of cavity and their coupling structure. The results of three cases are compared and their relationship is obtained, which benefits the automobile vibration and noise research. |
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| Keywords: | automotive body vibration noise modal analysis fluid-structure coupling system finite element ANSYS |
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