4aSA2. Topology optimization analysis for reduction of interior noise using a homogenization method for a mean eigenvalue.

Session: Thursday Morning, December 5

Time: 9:20

Author: Wakae Kozukue
Location: Dept. of Mech. Eng., Kanagawa Inst. of Technol., 1030 Shimo-ogino Atsugi-shi, Kanagawa, 243-02 Japan
Author: Ichiro Hagiwara
Location: Tokyo Inst. of Technol., Tokyo, 152 Japan


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, it is applied to the reduction of interior noise in the coupled structural--acoustic system for the first time. Attempts were made 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 the validity of these combined methods is demonstrated.

ASA 132nd meeting - Hawaii, December 1996