Topology optimization analysis for reduction of interior noise using homogenization method for mean eigenvalue

摘要

Shape and topology optimization analysis using a homogenization method has received much attention because it can treat topological changes of a design domain. However, as far as dynamic problems are concerned, it has not been successfully applied until recently. Here we apply it to the reduction of interior noise in the coupled structural-acoustic system for the first time. We attempt to reduce the mean eigenvalue formulated by Ma et al. and the sound pressure level integral formulated by Kozukue et al. by using a homogenization method, and we demonstrate the validity of these combined methods.