School of Applied Sciences, RMIT University, GPO Box 2476 V, Melbourne, Victoria 3001, Australia.
J Acoust Soc Am. 2012 Jun;131(6):4615-24. doi: 10.1121/1.4714354.
The effect of the resilience of the steel studs on the sound insulation of steel stud cavity walls can be modeled as an equivalent translational compliance in simple models for predicting the sound insulation of walls. Recent numerical calculations have shown that this equivalent translational compliance varies with frequency. This paper determines the values of the equivalent translational compliance of steel studs which make a simple sound insulation theory agree best with experimental sound insulation data for 126 steel stud cavity walls with gypsum plaster board on each side of the steel studs and sound absorbing material in the wall cavity. These values are approximately constant as a function of frequency up to 400 Hz. Above 400 Hz they decrease approximately as a non-integer power of the frequency. The equivalent translational compliance also depends on the mass per unit surface area of the cladding on each side of the steel studs and on the width of the steel studs. Above 400 Hz, this compliance also depends on the stud spacing. The best fit approximation is used with a simple sound insulation prediction model to predict the sound insulation of steel stud cavity walls whose sound insulation has been determined experimentally.
钢中柱的弹性对钢中柱空腔墙隔音的影响可以在预测墙壁隔音的简单模型中模拟为等效平移柔度。最近的数值计算表明，这种等效平移柔度随频率而变化。本文确定了钢中柱的等效平移柔度的值，这些值使简单的隔音理论与 126 面带有石膏板的钢中柱空腔墙的实验隔音数据吻合得最好，钢中柱两侧有石膏板，墙腔中有吸声材料。这些值在 400Hz 以下近似为频率的常数函数。高于 400Hz 时，它们大约按频率的非整数幂下降。等效平移柔度还取决于钢中柱每侧覆层的单位面积质量和钢中柱的宽度。高于 400Hz 时，该柔度还取决于中柱间距。使用简单的隔音预测模型来预测钢中柱空腔墙的隔音，该模型已通过实验确定了其隔音性能。
