硬涂层对整体叶盘的非线性振动特性影响

硬涂层阻尼技术是一种被动减振技术,通过将阻尼硬涂层涂敷在整体叶盘的叶片上有效改善叶盘的振动特性,目前已经得到十分广泛的应用.针对NiCrAlY硬涂层的各向异性特征建立硬涂层整体叶盘有限元模型,研究硬涂层对整体叶盘非线性振动特性的影响.考虑不同的硬涂层厚度和涂敷方式,利用Campbell图分析不同转速下的硬涂层整体叶盘的...

Research on the Effect of Hard Coating on the Nonlinear Vibration Characteristics of Blisk

Damping hard coating technology is a passive damping technology, which can effectively improve the vibration characteristics of blisk by applying damping hard coating on the blisk, and has been widely used at present. According to the anisotropic characteristics of nicraiy hard coating, a finite element model of hard coating blisk was established to study the effect of hard coating on the nonlinear vibration characteristics of blisk. Considering the different thickness of hard coating and coating method, Campbell diagram was used to analyze the inherent characteristics of hard coating blisk at different speeds. Considering the lateral excitation, the effects of different coating thickness and single and double-sided coating on the vibration response characteristics were studied. The results show that the resonance point and amplitude can be reduced by changing the thickness of the hard coating and the coating method.