This paper presents a study on optimum bending design and rib attachment design for a vibrating plate from the viewpoint of reducing noise in a frequency range of interest. There are many plate-like parts radiating noise in many structural and mechanical systems. Consequently, it is important to develop various computational design methods for reducing noise from vibrating plates. In this paper, an aluminum plate model clamped its four sides is picked up. Two ways of stiffening techniques to reduce noise are studied by numerical simulation based on the combination of the finite element method and the genetic algorithm. The first way is an optimum bending design of the plate. The second is of rib attachment. It is concluded that a simple genetic algorithm is effectively available and that bending design will be better than rib attachment.
展开▼
