Analysis and testing of sound insulation performance of wall panels for air cushion ship
For the sound insulation control in the noise transmission path control of hovercrafts,in addition to meeting the corresponding requirements for conventional sound insulation performance,they should also ensure their performance such as explosion resistance and shock resistance.Conduct sound insulation performance calculation analysis and experi-mental testing research on the front end impact resistant wall panel of the air cushion vessel bulkhead.Based on statistical en-ergy analysis method,a dual cavity single plate model was used to simulate standing wave tube equipment,and the sound in-sulation of a single layer homogeneous steel plate was calculated and verified through experimental testing.To further verify the accuracy of statistical energy analysis method in predicting material sound insulation,standing wave tubes were used for experimental research on component sound insulation.The experimental measurement and statistical energy analysis predic-tion results showed good agreement in the middle and low frequency bands below 630 Hz,while the error increased in the high frequency band with the appearance of the coincidence effect.The results indicate that the statistical energy analysis simulation calculation method used is effective,and the average sound insulation amount of this type of sound insulation component is 44 dB,which can effectively reduce the noise of the target cabin.The research results of this article provide new ideas for the vibration and noise reduction of hovercraft and similar ships.
hovercraftsound insulation capacitystatistical energy analysisvibration and noise reduction
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