局部约束阻尼板的减振设计与优化

通过两边简支约束条件下的单点锤击试验和ANSYS模拟研究了阻尼层厚度、阻尼层切口对局部约束阻尼(PCLD)结构振动的影响。分别从结构的振动加速度、振动总级值、最大位移及结构复合损耗因子角度进行阻尼分析,得出结构的阻尼性能随着阻尼层厚度的增加不断改善,综合考虑工程造价和阻尼效率等因素,选2 mm为该结构的最佳阻尼层厚度;对2 mm阻尼层结构进行切口处理可以优化结构的耗能效率,且经过结构中心的切口对结构阻尼性能的影响最为显著。

Vibration reduction design and optimization of locally constrained damping plates

The effects of damping layer thickness and damping layer notch on local constrained damping (PCLD) structure vibration were studied by single point hammer test and ANSYS simulation under simple supported constraints. Damping analysis was carried out from the perspective of vibration acceleration, vibration total value, maximum displacement and structural composite loss factor of the structure. It is concluded that the damping performance of the structure is continuously improved with the increase of the thickness of the damping layer, taking into account factors such as engineering cost and damping efficiency. 2mm is selected as the optimal damping layer thickness of the structure; the 2mm damping layer structure can be used to optimize the energy dissipation efficiency of the structure, and the influence of the structure center of the notch on the structural damping performance is most significant.