| SF480发动机机体的有限元和试验模态分析 |
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| 引用本文： | 刘玉梅,袁文华. SF480发动机机体的有限元和试验模态分析[J]. 农机化研究, 2006, 0(2): 180-182 |
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| 作者姓名： | 刘玉梅 袁文华 |
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| 作者单位： | 邵阳学院,湖南,邵阳,422004 |
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| 摘 要： | 结合实验模态与有限元理论模态分析,对SF480型发动机的机体进行了动态特性研究。首先,在Pro/Eingeer中建立机体的三维实体模型;然后导入ANSYS中进行网格划分,得到其有限元模型;再采用子空间迭代法进行模态求解,得到前10阶固有频率和振型。另外,用脉冲激励法在实验室对机体进行模态实验,得到实验模态参数。通过理论模态与实验模态参数的对比,验证了结果的有效性,并分析了机体模态的规律,为该类型发动机的机体结构优化提供了一定的参考依据。
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| 关 键 词： | 能源与动力工程 发动机机体 试验模态分析 动态特性 有限元 |
| 文章编号： | 1003-188X（2006）02-0180-03 |
| 收稿时间： | 2004-12-13 |
| 修稿时间： | 2004-12-13 |
Theoretical Modal and Experimental Modal Analysis of SF480 Engine Block |
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| LIU Yu-mei,YUAN Wen-hua. Theoretical Modal and Experimental Modal Analysis of SF480 Engine Block[J]. Journal of Agricultural Mechanization Research, 2006, 0(2): 180-182 |
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| Authors: | LIU Yu-mei YUAN Wen-hua |
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| Affiliation: | Shaoyang College, Shaoyang 422004, China |
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| Abstract: | The study on dynamic characteristic of SF480 engine block is performed with Finite Element Analysis Method and modal experiment. First, the 3D solid model of engine block is formed in Pro/E and then imported into ANSYS for meshing, and last modal resolution is obtained with Subspace Method. Then, modal experiment of engine block is carried out with impulse excitation method and corresponding low order modal parameters are obtained. Through comparison on natural frequencies and mode shape from theoretic modal analysis and modal experiment, laws governing engine block vibration are analyzed, which settled bases for the engine optimization. |
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| Keywords: | energy and power engineering engine block experimental modal analysis dynamic characteristic FEA |
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