Sound Insulation Performance Improvement of the Acoustic Enclosure Using Topology Optimization

Abstract

A Topology optimization attracts attention as a useful technique because of its flexibility in the design and applied to the various fields. To solve the wave problem with the impedance boundary condition, the utilization of the BEM and the level set method is proposed. The conventional method, however, cannot be applied to the acoustic problem dealing with plurality of fixed frequencies. In this paper, the topology optimization using the BEM and the level set method is applied to the design problem of an acoustic enclosure to improve the acoustic performance. The method for the acoustic problem dealing with plurality of fixed frequencies is proposed and some results are shown in this paper.