Applications of Spectral Finite Element Method for Vibration Analysis of Sandwich Plate with Viscoelastic Core

Abstract

In this paper, a spectral finite element method for a rectangular sandwich plate with viscoelastic core having the Levy-type boundary conditions has been plated. The sandwich plate consists of two isotropic and elastic face plates with a surfaced-bonded viscoelastic core. For the analysis, the in-plane and transverse energy in the face plates and only shear energy in the core are considered, respectively. To account for the frequency dependent complex shear modulus of the viscoelastic core, the Golla-HughesMcTavish model is adopted. To evaluate the validity and accuracy of the proposed method, the frequency response function and dynamic responses of the sandwich plate with all edges simply supported subject to an impact load are calculated and compared with those calculated by a finite element method. Though these calculations, it is confirmed that the proposed method is very reliable and efficient one for vibration analysis of a rectangular sandwich plate with viscoelastic core having the Levy-type boundary conditions.

Structural Assessment of the Optimal Section Shape of FRP Based Stiffeners

“…Eksik, et al (2007a, b) have carried out experimental as well as numerical work on the FRP based stiffened plates under uniform pressure to assess their strengths and failure modes. Lee, et al (2009) have studied the dynamic responses of FRP sandwich plated structure using a finite element approach. Shin, et al (2006) and Ji, et al (2010) have examined the structural design and analysis aspects of FRP structures in small yachts using finite element approaches.…”