Optimization of dynamic characteristics of composite shells by using genetic algorithms

Abstract

In this paper a technique of topological optimization by maximum damping criterion of multilayered shells composed of materials with different properties is considered. The semi-analytical method of finite element modeling in integral Fourier transform space is applied to construct mathematical models of composite structures. The classic genetic algorithm is used to determine the optimal combination of materials as a sequence of structure layers. It is shown that for multilayered elements of structures, an optimal project can be found by placing the material layers with constant characteristics in a sequence that provides the optimum value of the chosen optimization criterion. The examples of searching for the optimal projects of layer packages for a 15-layered shell by one or several optimization criteria, are presented