| 某活塞发动机机体组合结构模态分析 |
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| 引用本文： | 李忠杰,王树宗,练永庆.某活塞发动机机体组合结构模态分析[J].舰船科学技术,2007,29(4):125-127. |
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| 作者姓名： | 李忠杰 王树宗 练永庆 |
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| 作者单位： | 海军工程大学兵器新技术应用研究所,湖北 武汉430033 |
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| 摘 要： | 采用ANSYS软件对某活塞发动机机体和缸盖的组合结构进行了约束模态的有限元分析,得到了机体组合结构的前20阶约束模态的固有频率及相应振型。结果显示出机体组合结构各部分振动的强弱分布及抗振薄弱区,揭示了不同频率范围内机体组合结构振动模态的特性。为今后进行机体结构动力响应分析提供了充分的指导和依据。
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| 关 键 词： | 发动机 机体 有限元法 模态分析 |
| 文章编号： | 1672-7649（2007）04-0125-03 |
| 修稿时间： | 2006-04-21 |
Modal analysis on engine block combination structure of a piston engine |
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| LI Zhong-jie,WANG Shu-zong,LIAN Yong-qing.Modal analysis on engine block combination structure of a piston engine[J].Ship Science and Technology,2007,29(4):125-127. |
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| Authors: | LI Zhong-jie WANG Shu-zong LIAN Yong-qing |
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| Institution: | Research Institute of New Weaponry Technology and Application, Naval University of Engineering, Wuhan 430033 ,China |
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| Abstract: | The three dimensional model on engine block combination structure of a piston engine is established by the ANSYS software,and the modal analysis is carried out in the case of constrained model.Through the analysis,the inherent frequencies and mode shapes of the first 20 order modes are obtained respectively.The results show the relative distribution of the vibration magnitude in the whole block and reveal the characteristics of modes in various frequency bands,which provide necessary guides for dynamic response analysis of the engine block. |
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| Keywords: | engine block finite element method modal analysis |
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