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Experimental and Numerical Acoustic Characterization of Laminated Floors

机译:强化地板的实验和数值声学表征

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This work has focused on characterizing laminated floors from the sound perception perspective. There are two main aspects in this work. The first is an alternative proposed for experimental characterization, which consists in recording the sound generated by the impact of a steel ball when it falls on a laminated floor from a known height. The second is a numerical hybrid FEM-FDTD model. The numerical model uses FEM to simulate the mechanical part of the experiment when the ball impacts the floor. The results are implemented into a FDTD algorithm to take into account the acoustic part of the problem and to obtain the sound pressure level of the microphone. This numerical model is useful for identifying laminated floors if the mechanical properties of the material are known, and to characterize them from the sound perception perspective.
机译:这项工作集中于从声音感知的角度表征层压地板。这项工作有两个主要方面。第一种是建议用于实验表征的替代方法,它包括记录当钢球从已知高度落到层压地板上时,钢球撞击产生的声音。第二个是数值混合FEM-FDTD模型。当球撞击地板时,数值模型使用FEM来模拟实验的机械部分。将结果实现到FDTD算法中,以考虑问题的声学部分并获得麦克风的声压级。如果已知材料的机械性能,则此数值模型可用于识别层压地板,并从声音感知的角度对其进行表征。

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