Sound insulation characteristics of variable-thickness honeycomb sandwich plates based on elastic constraints
Based on the first-order shear deformation theory,the free vibration and sound insulation performance of honeycomb sandwich plates with variable thickness under different boundary conditions were researched.From the energy point of view,the theoretical model of sound insulation of honeycomb sandwich plates was established and solved by using the modified Rayleigh-Ritz method and the fluid-solid boundary coupling condition.The theoretical calculated inherent frequency and sound transmission loss of honeycomb sandwich plates were compared with the related literature results and simulation results,to verify the accuracy of the established theoretical model of sound insulation of honeycomb sandwich plates with variable thickness.In addition,the effects of thickness characteristic angles,thickness variation coefficients and boundary conditions on the sound insulation performance were analyzed.Studies have shown that the thickness variation coefficients and boundary conditions have a significant impact on the acoustic performance of honeycomb sandwich plates.
万方数据
维普
