应用粒子群优化算法设计锥形孔微穿孔板结构

Application of particle swarm optimization algorithm designing tapered hole microperforated panel structure

为了改善传统厚微穿孔板吸声结构的吸声性能,用锥形孔代替圆柱形孔,提出锥形孔微穿孔板结构.在锥形孔微穿孔板结构的确定方法上采用粒子群优化算法,分别对其进行单参数及双参数优化.仿真结果表明:经单参数优化后的锥形孔微穿孔板较相同厚度的传统厚微穿孔板在特定频率范围内的最大吸声系数明显增大;经双参数优化后的结构,不仅可以增大其最大吸声系数,而且能够保持原有共振频率不变,从而为锥形孔微穿孔板的结构设计提供了快速有效的设计方法.

In order to improve the sound absorption of thickness conventional microperforated panel,cylindrical holes are substituted with tapered holes,and the tapered hole microperforated panel structure is proposed.To determine the structure of the tapered hole microperforated panel,the particle swarm optimization algorithm is used,and single-parameter optimization and two-parameter optimization are performed.Numerical results show that：the maximum absorption coefficient of the tapered hole microperforated panel with single-parameter optimization increase significantly than such coefficient of the thickness conventional microperforated panel; compared with thickness conventional microperforated panel,the structure with two-parameter optimization not only increase the maximum absorption coefficient,but also can keep the original resonant frequency constantly.Results prove that particle swarm optimization algorithm provides a quick and efficient approach in designing tapered hole microperforated panel structure.