Vibration analysis of laminated composite coupled double cylindrical shell-annular-rectangular plate system

Abstract An universal model of laminated composite coupled double cylindrical shell-annular-rectangular plate system (LDCARS) is established in this paper, including free vibration and steady state response. Firstly, in the framework of FSDT, Modified Fourier series are adopted to express the displacement components of LDCARS. The coupling and boundary conditions are simulated with artificial spring technique. Then the unknown coefficients of the displacement components are solved by means of Rayleigh-Ritz method. By comparing results obtained by the current method to those of the previous literature, the finite element method (FEM) and experiment, the accuracy and correctness of this method is validated. Finally, a series of comprehensive analysis is carried out, and the contribution of main parameters to the vibration characteristics of LDCARS are analyzed. The present work is innovative, and the numerical results can be used as reference data for future researches in this field.