【作者】 赵晓丹； 张晓杰；

【Author】 Zhao Xiaodan;Zhang Xiaojie;

【机构】 江苏大学汽车与交通工程学院；

【摘要】 根据马大猷的微穿孔板理论,计算了三层微穿孔板的吸声系数。应用遗传算法对其结构参数进行了优化,并对其吸声特性进行了分析研究,与优化过后的双层微穿孔板结构比较表明,经优化后的三层微穿孔板在常见噪声频率范围内能获得更加饱满的吸声系数曲线,并通过试验验证了优化设计的结果。更多还原

【Abstract】 Based on MA Da-You’s general theory of the microperforated absorber,three layer microperforated structure absorption coefficient is calculated.By genetic algorithm parameters of the structure are optimized and its characteristic of absorption is analyzed.Optimal design of three layers microperforated panel can get more satisfactory absorption curve than double microperforated panel during the usual noise frequency area.A experiment is carried out to prove this optimal design.更多还原