平板与周期加筋阻尼板间耦合损耗因子的研究

耦合损耗因子是统计能量分析中唯一用于表征耦合系统间能量交换的重要参数，本文在波传递理论基础上，分析了周期加筋阻尼板的波传播特性：即对于周期加筋阻尼板无论是在波的传播域，还是在波的衰减域都减域缩小。结合统计能量分析法，讨论了加强筋宽度、材料阻尼对耦合损耗因子的影响，得到了增加加筋板阻尼损耗因子，使平板至加筋板的耦合损耗因子增大的结论。

Study on Coupling Loss Factor between Uniform Plate and Periodic Stiffened Damping Plate

Coupling loss factor is a significant parameter of Statistical Energy Analysis to show uniquely energy exchange between coupling systems.In this paperbased on the theory of wave transmissionpeculiarity of wave transmission of periodic stiffened damping plate is analyzedthere are energy flow and energy dissipation whether they are in propagation zones or in attenuation zones.When contribution due to width of stiffener to compatibility requirements is consideredthe propagation zones are broadened and the attenuation zones are shortened.The effect of width of stiffener and material damping on coupling loss factorCLFis discussed using Statistical Energy Analysisthe conclusions are obtainedwith increase of damping dissipation factor of periodic platethe CLF of a uniform plate coupled to a periodic stiffened plate is enhanced.