226 Topology Optimization of a Framework Structure Using Generalized Transfer Stiffness Coefficient Method

Abstract

This paper presents a topology optimization method of framework structures using the genetic algorithm and the generalized transfer stiffness coefficient method (GTSCM). The two-objective optimization problem that minimizes the total weight and maximizes the first natural frequency under the displacement constraint and the stress constraint is formulated, and the genetic algorithm based on the ground structure approach is developed. In the present algorithm, the merits of the GTSCM are utilized in order to improve the computation efficiently, and the effective methods of genetic operations for the topology optimization problem are proposed.