Vibration Absorber Design for Reducing Structural Sound Level Using Genetic Algorithms
Gao Feng£¬Shen Yapeng£¬Li Luxian
(Xi'an Jiaotong University, Xi'an 710049,China)

Abstract: Optimal design of vibration absorbers for reducing structural noise level often requires finding the minima of highly nonlinear multiª²dimensional functions. Genetic algorithms are introduced as a new promising tool for numerical optimization of such problems. The application presented is on the control of the acoustic response of a cantilever plate beamcarrying vibration absorbers. Genetic algorithms have been used to determine the discrete locations and physical parameters of the absorbers. A new mixed coding method is adopted to improve the ability of genetic algorithms. Several cases in different frequency bands show that the improved algorithms are efficient.
Keywords:  vibration absorber;optimal design;sound;genetic algorithms

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