Abstract
Because the senior car mute demand for car interior, sound absorbing material are widely used for proofing in automotive. Two path exists in the sound-absorbing material. The first is a skeleton path of the sound absorbing material. The second is the air path of the sound-absorbing material. When the vehicle is traveling, vibrations generated from the engine to vibrate the vehicle body frame, the vibration is transmitted to the rubber sheet in the air path and backbone path of the sound absorbing material. Sound occurs rubber sheet is vibrated. In order to improve the acoustic design of the automobile cabin, the characteristics of the sound absorbing material is required. In this study, rubber sheet and sound-absorbing material is used .The model primarily the mechanical dynamics and acoustic engineering vibration phenomena in sound-absorbing material, to analyze the acoustic characteristics.
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