OPTIMAL DESIGN OF TRUSS STRUCTURES WITH STRESS AND DISPLACEMENT CONSTRAINTS USING A HYBRID ALGORITHM

Abstract

In this article, the hybrid algorithm called SAwPSO (Simulated Annealing with Particle Swarm Optimization) is proposed to optimize truss structures with stress and displacement constraints. SAwPSO works as follows: SA selects the PSO parameters and then PSO optimizes the problem. This allows the designer to not need to tune the PSO parameters to solve the problem. The reliability of the SAwPSO is demonstrated through three optimization problems of truss structures with continue design variables. Numerical results indicate that SAwPSO can minimize the overall weight of truss structures subjected to stress and displacement constraints.