A simple model of the sound insulation of gypsum board on resilient supports
A simple model of the sound insulation of gypsum board on resilient supports
复制标题
弹性支撑上石膏板隔音的简单模型
DOI：
10.3397/1.2839663
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
J. Birta
中科院分区：
文献类型：
--
作者：
J. S. Bradley;J. Birta
这项工作报告了一个简单模型的发展，以解释在刚性双叶墙壁或地板系统中添加弹性通道的影响。将安装在弹性通道上的表面层视为隔振器，其基本共振频率由弹性通道的刚度和空腔的刚度以及表面层的质量共同决定。各种常见形式的弹性通道的有效刚度被确定为近似等同于160‐mm空腔的有效刚度。含有吸声材料的弹性通道和腔体结构的阻尼随腔体深度的变化而变化。该模型并不试图解释通过弹性支撑的高频传输，但确实允许优化具有弹性通道的双叶结构的低频性能。它还表明，改进的实际范围是有限的。
This work reports on the development of a simple model to explain the effects of adding resilient channels to a rigid double‐leaf wall or floor system. The surface layers mounted on resilient channels are treated as a vibration isolator with a fundamental resonance frequency determined by the combination of the stiffness of the resilient channels and the stiffness of the air cavity along with the masses of the surface layers. The effective stiffness of various common forms of resilient channels is determined to be approximately equivalent to that of a 160‐mm air cavity. The damping of constructions including resilient channels and cavities with sound‐absorbing material is found to vary with cavity depth. The model does not attempt to explain high‐frequency transmission through the resilient supports but does permit the optimization of the low‐frequency performance of double‐leaf constructions with resilient channels. It also demonstrates that the practical range of improvements is limited.