声阻抗在管路柔性元件降噪效果评估中的应用

Evaluating the acoustic attenuation of flexible element of piping by sound-impedance

本文根据传递矩阵法,建立了管路柔性元件的固有特性声阻抗和声学性能参数插入损失之间的关系。根据已有的管路柔性元件声阻抗参数获得不受工作环境影响的插入损失,给出管路柔性元件降噪效果的评估方法。

The relationship between the sound-impedance and insert-loss of symmetric piping equipment was investigated by transfer matrix method. And the insert-loss of one silencer was worked out. By this way, the performance of piping equipment could be predicted and the optimization will be more easy.