| 裂纹转子的振动特性与裂纹参数识别 |
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| 引用本文： | 董广明,陈进,邹剑.裂纹转子的振动特性与裂纹参数识别[J].上海交通大学学报,2004,38(6):857-861. |
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| 作者姓名： | 董广明 陈进 邹剑 |
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| 作者单位： | 上海交通大学,振动、冲击、噪声国家重点实验室,上海,200030 |
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| 基金项目： | 国家基础研究发展规划(973)项目(1998020321)，国家自然科学基金(10176014)资助项目，振动、冲击、噪声国家重点实验室开放基金(VSN-2002-03)资助项目 |
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| 摘 要： | 基于Euler-Bernoulli理论和局部柔度理论，给出了停机状态单一开裂纹转子的连续模型．数值仿真研究了裂纹深度和裂纹位置对转子固有频率以及振型的影响，并提出了利用固有频率和振型识别裂纹参数的方法，仿真算例验证了该方法的有效性和可行性．
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| 关 键 词： | 裂纹转子 开裂纹 连续模型 振动分析 裂纹参数识别 |
| 文章编号： | 1006-2467(2004)06-0857-05 |
| 修稿时间： | 2003年6月12日 |
Vibration Characteristics of Cracked Rotor and Crack Identification |
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| DONG Guang-ming,CHEN Jin,ZOU Jian,China.Vibration Characteristics of Cracked Rotor and Crack Identification[J].Journal of Shanghai Jiaotong University,2004,38(6):857-861. |
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| Authors: | DONG Guang-ming CHEN Jin ZOU Jian China |
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| Institution: | DONG Guang-ming,CHEN Jin,ZOU Jian00030,China) |
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| Abstract: | A continuous model, which is based on the Euler-Bernoulli theory and the local flexibility theorem, was introduced for vibration analysis of a static (non-rotating) rotor with an open crack. Through numerical analysis, the effects of crack depth and crack location on the dynamic characteristics of cracked rotor were investigated. A crack identification algorithm, which makes use of the deflections of the first mode shape at two symmetric points and the contour diagram of crack location versus crack depth for the first two given normalized eigenfrequencies, was proposed to predict the crack location and depth on a rotor. An illustrative example demonstrates the validity and feasibility of the proposed crack identification algorithm for a rotor with an open crack. |
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| Keywords: | cracked rotor open crack continuous model vibration analysis crack identification |
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