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After borrowing the idea of precise integration method, a precise integration transfer matrix method (PITMM) is proposed by modifying traditional transfer matrix method. The submarine hull can be modeled as joined conicalcylindrical-spherical shells. By considering the effect of the ring-stiffeners, the field transfer matrixes of shells of revolution are obtained accurately by PITMM. After assembling the field transfer matrixes into an entire matrix, the dynamic model is established to solve the dynamic responses of the joined shell. By describing the sound pressure in fluid by modified wave superposition method (MWSM) and collocating points along the meridian line of the joined shell, finally the structural and acoustic responses of a finite stiffened submarine hull can be predicted by coupled PITMM and MWSM. The effectiveness of the present method has been verified by comparing the structural and acoustic responses of the spherical shell with existing results. Furthermore, the effects of the model truncation, stiffness and thickness on the structural and acoustic responses of the submarine hull are studied. 相似文献
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就川省鹽水之成因而加以解释者,最近有譚錫疇、李春昱二氏之「四川鹽產概論」、及譚氏之「四川岩鹽及鹽水礦床之成因」二文。大要謂白堊紀層之鹽質鹽水,實爲四川鹽水之主源,卽自上層次第向下沉濾,以達於侏羅紀層,又達於三 相似文献
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