Vibration Characteristics Investigation of Hard-Coated Mistuned Blisk With Multi-Packets By Lumped Parameter Model

Bin Bai, Xiang Li, Xingzhong Zeng, Minghui Yao, Niu Yan, Junfeng Man, Zhiqiang Tao
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Abstract

To improve the performance and reduce the vibration of the mistuned blisk, a novel approach combining the hard-coating and multi-packets is presented. Firstly, the dynamical models of the blisk without hard-coating and multi-packets, the hard-coated mistuned blisk without multi-packets, and the hard-coated mistuned blisk with multi-packets, are established based on the lumped parameter model (LPM). Then, the solved results are compared with that of previous literature to validate the feasibility and correctness of the proposed models. Furthermore, the characteristics of the natural frequencies and the vibration responses for the mistuned blisk are investigated by proposed LPMs. Finally, the effect of the hard-coating and multi-packets on the vibration characteristics for the mistuned blisk are discussed. The obtained results manifest that the vibration response of the mistuned blisk can be further suppressed when the hard-coating and the multi-packets are considered simultaneously compared with only the hard-coating or multi-packets considered, which provides useful guidance on the vibration reduction for the mistuned blisk.
用集合参数模型研究多包硬涂层雾化叶盘的振动特性
为了提高雾化叶盘的性能并减少其振动,本文提出了一种结合硬涂层和多包的新方法。首先,基于集合参数模型(LPM)建立了无硬涂层和多包层的叶盘、无多包层的硬涂层雾化叶盘和有多包层的硬涂层雾化叶盘的动力学模型。然后,将求解结果与之前的文献进行比较,以验证所提模型的可行性和正确性。此外,提出的 LPM 还研究了失谐叶盘的固有频率和振动响应特性。最后,讨论了硬涂层和多包对雾化叶盘振动特性的影响。结果表明,与只考虑硬涂层或多包层相比,同时考虑硬涂层和多包层可进一步抑制雾化叶盘的振动响应,这为减少雾化叶盘的振动提供了有益的指导。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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