Dynamic performance of composite beam embedded by a double-layer damping film

doi:10.19936/j.cnki.2096-8000.20220928.002

Abstract

Abstract: In order to study the dynamic performance of a co-cured double-layer damping film sandwiched composite beam under fixed-support boundary conditions, based on the first-order shear deformation theory (FSDT), the variational principle and the Hamilton principle, a free vibration theoretical model of a co-cured double-layer damping film embedded composite beam was established in this paper. The Galerkin weighted residual value method is used to solve the free vibration theoretical solution under fixed-support boundary conditions. An experimental platform is constructed to obtain experimental data and modal shapes. The validity of the theoretical model is verified by comparing the theoretical calculation results with the modal experiment and ANSYS finite element analysis results. The influence of the distribution and structural geometric parameters of the composite material layer and the damping layer on the dynamic performance of the co-cured double-layer damping film embedded composite beam is further explored, which provides a theoretical basis for the optimal design of the double-layer damping film composite beam structure.

Key words: double damping film embedded composite beam, fixed-support boundary, modal experiment, finite element analysis, dynamic performance

CLC Number:

TB332

MA Guo-rui, LIANG Sen, YANG Gong-xian. Dynamic performance of composite beam embedded by a double-layer damping film[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(9): 11-22.

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