Transfer Matrix Method for Multibody Systems (MSTMM) is easy to formulate, systematic to apply, simple to code and the matrices are low order which contributes to higher computational efficiency than ordinary dynamics methods. The main idea about how to simulate the vibration characteristic and hydroelastic behavior of a submarine sail mounted hydroplanes system based on MSTMM and coupled with Theodorsen flow model is presented in this paper. The simulation results are compared with those theoretical and experimental reported in the existing literature and commercial software simulation, and good results are obtained. The main idea of this paper provides a reference for dynamics of system with fluid-structure interaction (FSI) simulation and analysis of similar problems in the field of engineering.

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