1. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China;
2. College of Mechanical and Electronic Engineering, Jingdezhen Ceramic Institute, jiangxi, Jingdezhen 333001
Abstract：A new finite element model is developed for analyzing the transverse vibration of the three-layer viscoelastic sandwich beams. The first layer is the constraining layer, the mid-layer is the viscoelastic core and the third layer is the base beam. The constraining layer and the beam are treated as the Euler-Bernoulli beam. The viscoelastic core is assumed to withstand tension and compression in the transverse. The compressive strain of the viscoelastic layer comes from the relative vibration of the constraining layer and the base beam, and the displacement of the viscoelastic layer is assumed to be a linear interpolation of the displacement between the constrained layer and the beam. The present finite element model is compared with the experimental results and several analytical models to verify its validity. The results show that the finite element model can predict the resonant frequency accurately, but the prediction accuracy of the loss factor needs to be improved on.
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