Structural-acoustic coupling characteristics of honeycomb sandwich plate based on parameter sensitivity analysis
来源期刊：中南大学学报(英文版)2014年第1期
论文作者：WANG Sheng-chun(王盛春) SHEN Wei-dong(沈卫东) XU Jia-feng(徐嘉锋) LI Yun(李赟)
文章页码：252 - 261
Key words：honeycomb sandwich plate; sensitivity; structural-acoustic coupling
Abstract: The structural-acoustic coupling model for isotropic thin elastic plate was extended to honeycomb sandwich plate (HSP) by applying Green function method. Then an equivalent circuit model of the weakly-strongly coupled system was proposed. Based on that, the estimation formulae of the coupled eigenfrequency were derived. The accuracy of the theoretical predictions was checked against experimental data, with good agreement achieved. Finally, the effects of HSP design parameters on the system coupling degree, the acoustic cavity eigenfrequency, and sound pressure response were analyzed. The results show that mechanical and acoustical characteristics of HSP can be improved by increasing the thickness of face sheet and reducing the mass density of material.
WANG Sheng-chun(王盛春), SHEN Wei-dong(沈卫东), XU Jia-feng(徐嘉锋), LI Yun(李赟)
(Key Laboratory of Special Power Supply, Chongqing Communication College, Chongqing 400035, China)
Abstract:The structural-acoustic coupling model for isotropic thin elastic plate was extended to honeycomb sandwich plate (HSP) by applying Green function method. Then an equivalent circuit model of the weakly-strongly coupled system was proposed. Based on that, the estimation formulae of the coupled eigenfrequency were derived. The accuracy of the theoretical predictions was checked against experimental data, with good agreement achieved. Finally, the effects of HSP design parameters on the system coupling degree, the acoustic cavity eigenfrequency, and sound pressure response were analyzed. The results show that mechanical and acoustical characteristics of HSP can be improved by increasing the thickness of face sheet and reducing the mass density of material.
Key words:honeycomb sandwich plate; sensitivity; structural-acoustic coupling
