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首页> 外文期刊>Applied Acoustics >Experimental determination of transient structure-borne sound power from heavy impact sources on heavyweight floors with floating floors using an inverse form of transient statistical energy analysis
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Experimental determination of transient structure-borne sound power from heavy impact sources on heavyweight floors with floating floors using an inverse form of transient statistical energy analysis

机译：使用逆向形式的瞬态统计能量分析，通过重型地板和浮动地板上的重冲击源对瞬态固体声功率的实验确定

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摘要

For heavy impacts on floors in heavyweight buildings, prediction models are needed at the design stage to estimate the spatial-average Fast time-weighted maximum sound pressure level in the receiving room. This paper extends previous work using Transient Statistical Energy Analysis (TSEA) in heavyweight buildings by introducing an inverse form of TSEA (ITSEA) to determine the transient structure-borne sound power input from heavy impact sources into a heavyweight base floor with a floating floor. The difference in the power input with and without a floating floor gives a correction factor that can be used to modify the power input into the base floor. This allows the effect of the floating floor to be incorporated in a TSEA model of a heavyweight building. ITSEA is initially validated with heavy impacts from a rubber ball directly onto a concrete base floor and with small, locally reacting, mass-spring systems. Laboratory experiments are then used to quantify the transient structure-borne sound power input into a full-size concrete base floor when a heavy impact is applied to the base floor, and to the base floor with a full-size Ondol floating floor. The resulting TSEA model shows close agreement with the predicted change in the Fast time-weighted maximum sound pressure level due to the floating floor.
机译：如果要对重型建筑的地板造成严重影响，在设计阶段就需要预测模型来估计接收室中空间平均快速时间加权最大声压级。本文通过引入反演形式的TSEA（ITSEA）来确定重型冲击建筑向具有浮动地板的重型基础地板输入的瞬态结构声功率，从而扩展了之前在重型建筑中使用瞬态统计能量分析（TSEA）的工作。有浮动地板和没有浮动地板的电源输入的差异提供了一个校正因子，可用于修改输入到底层地板的电源。这允许将浮动地板的效果合并到重型建筑的TSEA模型中。 ITSEA最初通过橡胶球直接撞击混凝土基础地板上的重冲击以及具有局部反应的小型弹簧系统进行了验证。然后，当对基础地板以及具有全尺寸Ondol浮动地板的地板施加重冲击时，实验室实验将用于量化输入到全尺寸混凝土基础地板中的瞬态结构声功率。最终的TSEA模型与浮动地板导致的快速时间加权最大声压级的预测变化非常吻合。

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