Abstract：Semi-active controller design methodology and topology optimizations for an electrorheological sandwich plate under semiactive variable modality stiffness vibration control are investigated. A semi-active modal control algorithm adapt to infinite degree of freedom system was designed. Subsequently, on the basis of topological particle swarm optimization (PSO)，the topological configurations of maximum a single or multiple modal frequence mobility of the ER sandwich plate structure under certain needed amount of ER material were obtained. Lastly, two kinds of comparisons of equivalent modal damping ratio and time responses with the optimal and fully covered configurations were adopted. Numerical examples demonstrate the validity of the proposed optimal problem and modal control algorithm.
validate the effectiveness of proposed semiactive controller and topology optimized approach.
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