论文标题
通过低频范围内的双层玻璃窗户的声音传输损失
Sound transmission loss through double glazing windows in low frequency range
论文作者
论文摘要
外部建筑物外墙的国内窗户在抵抗户外空降噪声的隔音中发挥了重要作用。根据标准ISO 10140，在实验室中，对其声学性能的预测是经典的。在这项工作中，提出了一个3D弹性声音有限元模型（FEM）来预测家庭窗口的三种不同玻璃构型的声音还原指数，这些窗口与实验室测量相比。窗户两侧的两个声腔分别用于模拟源侧的弥散场和接收器侧的压力场。通过将简化的FEM用于双层玻璃窗，声音还原索引是根据源和接收音压水平之间的差异从100到500 Hz的。
The domestic windows in the exterior building facade play a significant role in sound insulation against outdoor airborne noise. The prediction of their acoustic performances is classically carried out in laboratory according to standard ISO 10140. In this work, a 3D elasto-acoustic finite element model (FEM) is proposed to predict the sound reduction index of three different glazing configurations of domestic window, which are compared to laboratory measurements. Two acoustic cavities with rigid-boundaries on both sides of the window are used to simulate respectively the diffuse field on the source side and the pressure field on the receiver side. By using a simplified FEM for the double glazed windows, the sound reduction index is calculated from the difference between the source and receiving sound pressure levels in the one-third octave band from 100 to 500 Hz.
