TOPOLOGY OPTIMIZATION OF SEMIACTIVE VIBRATION CONTROL FOR AN ELECTRORHEOLOGICAL SANDWICH PLATE

Topology optimizations for an electrorheological sandwich plate under semiactive variable modality stiffness vibration control are investigated. First of all, on the basis of topological particle swarm optimization (PSO) and taking the needed amount of electrorheological (ER) material and the maximization of semiactive control ability as the objective function, the topological optimization design method of damping structure was presented, and the topological configurations of maximizing a single or multiple modal frequency mobility of the ER sandwich plate structure under certain needed amount of ER material were obtained. Subsequently, the comparisons of equivalent modal damping ratio and time responses with the optimal configurations and fully covered layout validate the effectiveness of the proposed semiactive controller and topology optimized approach.