This paper discusses sound radiation from a composite plate with each of its edges arbitrarily supported in the form of elastic restraints. The vibration characteristics (impact force and sound pressure histories) of elastically restrained laminated composite plates used for sound radiation are studied via both theoretical and experimental approaches. A comparison between measured and simulated transient acoustic fields generated by an impacted composite plate is reported. For structurally radiated sounds, the sound field is directly coupled to the structural motion. Therefore, impact response analysis should be performed. The plate vibration is modeled in the time domain using a spring-mass model. In this study, the radiated sound induced by impact was computed by solving the Rayleigh integral equation. The experimental results are used to verify the accuracy of the proposed analysis model. The close agreement between the experimental and theoretical results has validated the suitability of the proposed numerical model. Finally, the effects of support properties on the sound radiated from the plate were investigated.
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