| 转子动力学系统的灵敏度分析与动力学修改 |
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| 引用本文： | 刘保国,吴永,殷学纲. 转子动力学系统的灵敏度分析与动力学修改[J]. 机械强度, 2001, 23(1): 95-97 |
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| 作者姓名： | 刘保国 吴永 殷学纲 |
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| 作者单位： | 1. 郑州机械研究所,
2. 重庆大学 |
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| 基金项目： | 机械工业技术发展基金资助项目! (96JA0 1 0 2 ) |
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| 摘 要： | 给出了基于Riccati传统矩阵法的转子动力学系统固有特性的灵敏度分析和相应的动力学修改方法。该方法避免了模态坐标下的系统灵敏度物理意义不明确的缺点，可以直接计算出转子系统的固有频率或临界转速对系统的各种结构参数和物理参数的灵敏度，相应的动力学修改结果在很大范围内能满足工程实际的精度要求。
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| 关 键 词： | 转子动力学 固有频率 临界转速 灵敏度 动力学修改 传递矩阵 |
| 修稿时间： | 1999-12-16 |
SENSITIVITY ANALYSIS AND DYNAMIC MODIFICATION OF ROTOR DYNAMIC SYSTEM |
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| LIU Baoguo WU Yong YIN Xuegang. SENSITIVITY ANALYSIS AND DYNAMIC MODIFICATION OF ROTOR DYNAMIC SYSTEM[J]. Journal of Mechanical Strength, 2001, 23(1): 95-97 |
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| Authors: | LIU Baoguo WU Yong YIN Xuegang |
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| Affiliation: | LIU Baoguo 1 WU Yong 2 YIN Xuegang 2 |
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| Abstract: | A new method for the sensitivity analysis and dynamic modification of the rotordynamic system is presented. The RICCATI transfer matrix method is applied to obtain the sensitivity of the structural and physical parameters on the natural frequency and critical speed of the rotor system, and the related derivative transfer formulas are derived. The physical base of the sensitivity obtained by this method is clearer than the one by modal analysis method. The method is used to analysis the natural frequency's sensitivities of a multi stage pump to the geometric and physical parameters, and the dynamic modified results were listed. It was proved the dynamic modification based on this method could satisfy the engineering accuracy. |
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| Keywords: | Rotor dynamics Natural frequency Critical speed Sensitivity Dynamic modification Transfer matrix |
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