This paper analyses structural and acoustic performance interactions of a building covered with a cable net and membrane roof following a multiphysics approach. The problem has three different variables: the roof time-depending deformed shape under wind action (duration 1800 s), the extremely variable position of a singer on the stage (30 s speaker recorded movements were expanded through a 6th order Hermite chaos polynomials to cover all the potential acoustic source positions) and finally, the listeners’ location (assumed according to Beranek for a listener located in the middle of the aisle between two stalls). The Initial Time Delay Gap was assumed as a measure of speech or song diffusion. In addition, reverberation time, clarity and early decay time were estimated for both undeformed and deformed roof shapes to evaluate acoustic performance variations. Roof deformation was calculated using time-history nonlinear structural analyses done by applying wind action measured in wind tunnel.

本文采用多物理场方法分析了覆盖有电缆网和膜屋顶的建筑物的结构和声学性能相互作用。该问题具有三个不同的变量：在风作用下（时间为1800 s），屋顶随时间变化的变形形状；歌手在舞台上的位置极为可变（30 s演讲者录制的动作通过6阶Hermite混沌多项式展开，以覆盖所有潜在的声源位置），最后是听众的位置（根据Beranek的假设，听众位于两个隔间之间的过道中间）。初始时延间隙被假定为语音或歌曲扩散的量度。另外，混响时间 评估未变形和变形的屋顶形状的清晰度和早期衰减时间，以评估声学性能变化。屋顶变形是通过使用在风洞中测得的风作用进行的时程非线性结构分析来计算的。