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Matrix perturbation methods for eigenvalue analysis of vibration of compressible fluid-solid

Ju Jianmin, Dong Yuxin (Dalian University of Technology, Dalian)  
When compressibility of fluid is considered,the parameter matrixes of vibration equation of fluid-structure will be nonsymmetry. After fluid freedoms are reduced to solid by the paper,a non linear characteristic equation that has symmetric matrixes has been obtained; then the approximate value has been solved with matrix perturbation methods.
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