OPTIMIZATION OF EQUIPMENT ALLOCATION AND SOUND-BARRIERS SHAPE IN A MULTI-NOISE PLANT BY USING SIMULATED ANNEALING

摘要

Because high noise levels in industrial plants can be injurious to workers and lead not only topsychological but also to physiological ailments, noise control in factories becomes essential. In orderto overcome the noise impact emitted from a multi-noise plant, a sound barrier, a popular noisecontrol strategy, has been used in the industrial field for a long time. Yet, the traditional method in thedesign of a sound barrier is time-consuming. Recently, to economically improve acousticalperformance, a new strategy (flexible allocation) is applied; however, the acoustical performance is stillinsufficient. In order to quickly, efficiently, and economically control the noise level specified by theEnvironmental Protection Administration, interest in shape optimization of a sound barrier inconjunction with equipment allocation around the plant's boundary is rising. In this paper, the noveltechnique of simulated annealing (SA) in conjunction with the theoretical sound propagation model andthe method of minimized variation square is applied in the following numerical optimizations. Before asound barrier is optimized, the sound propagation from one single noise is tested and compared withthe experimental data for the purpose of accuracy within the mathematical model. Moreover, threekinds of sound barrier systems have been fully discussed and optimally shaped by the SA. The resultsreveal that the sound barrier can be properly shaped. Consequently, this paper may provide anefficient and rapid methodology in the shape-optimized work for a sound barrier installed in a multi-equipment plant.