重特征值模态灵敏度分析的非线性摄动法
NONLINEAR PERTURBATION METHOD FOR ANALYSIS OF MODAL SENSITIVITIES WITH REPEATED EIGENVALUES
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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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Key words:
- Modal analysis /
- Eigenvalues /
- Perturbation method
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