| 柴油机机体三维建模及有限元模态分析 |
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| 引用本文： | 刘玉梅,袁文华.柴油机机体三维建模及有限元模态分析[J].机械工程师,2007(1):89-90. |
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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： | 应用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/E中建立机体的三维实体模型,再导入ANSYS中进行网格划分,得到其有限元模型,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;其次,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： | 发动机机体 动态特性 有限元 理论模态分析 柴油机 机体 三维建模 有限元模态分析 Block Engine Dynamic Characteristic 参考依据 结构优化 类型 规律 有效性 结果 验证 模态参数 实验 理论 频率和振型 求解 子空间迭代法 |
| 文章编号： | 1002-2333(2007)01-0089-02 |
| 修稿时间： | 2006-10-23 |
3D Model and Dynamic Characteristic FEA of Engine Block |
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| LIU Yu-mei,YUAN Wen-hua.3D Model and Dynamic Characteristic FEA of Engine Block[J].Mechanical Engineer,2007(1):89-90. |
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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. 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: | engine block dynamic characteristic FEA experimental modal analysis |
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