Author(s)

E. Barkanov, R. Rikards & A. Chate

Abstract

The main object of present investigations is numerical optimisation of damping the vibrations and weight of sandwich and laminated composite structures in harmonic oscillations at frequencies close to the natural frequencies of structure. The method of planning of experiments is used for this purpose. Computations are carried out by using a finite element method and two methods of dynamic analysis: the method of complex eigenvalues and method of the potential energy of eigenmodes. The frequency response analysis is also applied. For numerical analysis of examined structures the finite element models of sandwich and laminated composite beams and plates were developed. Energy of dissipation in the viscoelastic layers is taking into account using complex

Keywords