| 重特征值模态灵敏度分析的非线性摄动法 |
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| 引用本文： | 崔博文,沈允文.重特征值模态灵敏度分析的非线性摄动法[J].航空动力学报,1998,13(1):89-92,111. |
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| 作者姓名： | 崔博文 沈允文 |
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| 作者单位： | 西北工业大学 |
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| 摘 要： | 利用非线性摄动等式，推导了实对称矩阵的重特征值模态灵敏度计算公式。该方法的优点是保持了原特征系统矩阵的对称性和带宽。数值算例表明该方法精度高，易于计算和实施。
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| 关 键 词： | 特征值 模态分析 摄动法 |
| 收稿时间： | 1996/12/1 0:00:00 |
| 修稿时间： | 3/1/1997 12:00:00 AM |
NONLINEAR PERTURBATION METHOD FOR ANALYSIS OF MODAL SENSITIVITIES WITH REPEATED EIGENVALUES |
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| Cui Bowen and and Shen Yunwen.NONLINEAR PERTURBATION METHOD FOR ANALYSIS OF MODAL SENSITIVITIES WITH REPEATED EIGENVALUES[J].Journal of Aerospace Power,1998,13(1):89-92,111. |
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| Authors: | Cui Bowen and and Shen Yunwen |
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| Institution: | 7th Dept.Northwestern Polytechnical University,Xi'an 710072 |
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| Abstract: | An algorithm was made out for analyzing the modal sensitivities with repeated eigenvalues of real symmetric matrices by means of nonlinear perturbation equation.It has advantage in retaining the symmetry and band structure of the original eigensystem matrices.A numerical example shows that the method has high accuracy and can be easily implemented on computer. |
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| Keywords: | Modal analysis Eigenvalues Perturbation method |
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