科研之友
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摘要
Based on the Flügge shell theory, an improved precise transfer matrix method (IPTMM) was applied to the solution of acoustic radiation for stiffened cylindrical shells. According to the techniques of addition theorem and increment storage, calculation of inhomogeneous was improved. Then, the improved precise transfer matrix method was obtained. The effects of different end boundary condition, structural damping, fluid medium and shell thickness were presented. The results show that when the boundary conditions from freedom supported and simply supported change to rigidly fixed, external radiation acoustic pressure of structure gradually reduces. With the increasing of structural damping, external radiation acoustic pressure of structure gradually reduces.
