Design of micro-perforated panel with genetic algorithm and pattern search and compensation for dust pollution
Micro-perforated panels are inevitably contaminated by dust after long-term operation,causing changes in certain structural parameters such as porosity and perforation diameter,and thus resulting in the deviation of the ac-tual sound absorption performance from the designed value.In this paper,a method for designing micro-perforated panels is proposed based on genetic algorithm and pattern search,and the necessity of dust pollution compensation is pinpointed in the design of micro-perforated panels.According to the position of the designed panel parameters rela-tive to the parameters corresponding to the sound absorption peak,the perforation diameter is adjusted appropriately to be slightly larger than the perforation diameter corresponding to the sound absorption peak,which can effectively reduce the influence of dust pollution on the sound absorption performance.
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