Research on prediction model of structural sound insulation performance based on finite element-statistical energy method
Sound insulation structure is widely used in ship cabin panels and other areas.It is significant for the theoret-ical design and engineering application of sound insulation structure to realize the efficient and accurate prediction of the sound insulation performance of the structure.The calculation model of sound insulation performance of steel plate was es-tablished by theoretical formula,COMSOL finite element method and VA One statistical energy method.Based on the ex-perimental values,the frequency application with different methods is explored to achieve high-precision calculation of sound insulation performance in different frequency bands.The results show that in the frequency range of 125-4000 Hz,the average sound insulation error is less than 1 dB by using three methods.The thickness of the plate is unchanged,the size of the plate is expanded in equal proportion,and the number of modes in each central frequency band increases.The initial fre-quency of the high-precision calculation of the sound insulation of the plate by the statistical energy method moves to the low frequency.
sound insulationfinite element methodstatistical energy methodhigh precision
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