| 船用柴油机机体组合结构模态分析方法 |
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| 引用本文： | 魏立队,段树林,吴伋,武起立,于洪亮. 船用柴油机机体组合结构模态分析方法[J]. 噪声与振动控制, 2012, 32(2): 132-136. DOI: 103969/j.issn.1006-1355-2012.02.032 |
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| 作者姓名： | 魏立队 段树林 吴伋 武起立 于洪亮 |
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| 作者单位： | （ 大连海事大学 轮机工程学院， 辽宁 大连 116026 ） |
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| 基金项目： | 辽宁省自然基金项目（基金编号：20072144） |
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| 摘 要： | 利用数值试验方法验证包括柴油机机座、机架、气缸体、扫气箱、空冷器等有限元模型简化的合理性。通过螺栓连接板件的模态试验验证有限元法模态分析中螺栓连接处理方法的可靠性。在此基础上建立包括以上各部件的某大型船用6缸柴油机机体组合结构有限元模型。通过对整体结构模态分析，找出整机刚度局部薄弱部位和整体固有振型。为大型船用柴油机设计人员在设计阶段，预报和预防整体结构振动提供一较为简便的方法。
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| 关 键 词： | 振动与波 船用柴油机 数值试验 模态分析 有限元法 组合结构 |
| 收稿时间： | 2011-06-20 |
| 修稿时间： | 2011-07-28 |
Modal Analysis Method of Combination Structure for Marine Diesel Engine |
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| WEI Li-dui , DUAN Shu-lin , WU Ji , WU Qi-li , YU Hong-liang. Modal Analysis Method of Combination Structure for Marine Diesel Engine[J]. Noise and Vibration Control, 2012, 32(2): 132-136. DOI: 103969/j.issn.1006-1355-2012.02.032 |
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| Authors: | WEI Li-dui DUAN Shu-lin WU Ji WU Qi-li YU Hong-liang |
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| Affiliation: | ( Marine Engineering College, Dalian University, Dalian 116026, Liaoning China; ) |
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| Abstract: | The simplified finite element models of base, frame, cylinder＇s body, scavenge box, and air cooler of a diesel engine were established and validated by numerical simulation respectively. Treatment method of bolt-connection in the finite element analysis （FEA） was verified by the results modal testing of bolted plates. Based on these, the finite element model of the combination structure of a 6-cylinder diesel engine was built. Weak parts and the modals of whole engine were found through modal analysis. A simple approach for prediction and reduction of engine structure＇ s vibration was proposed. |
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| Keywords: | vibration and wave marine diesel engine numerical simulation modal analysis finite element method combination structure |
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