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Novel dynamic modeling and analysis method of the wind turbine gearbox gear-bearing coupling system considering gear crack and tooth modification with support shaft flexibility
参考中译:考虑齿轮裂纹和齿轮修形以及支撑轴柔性的风力涡轮机齿轮-轴承耦合系统动态建模和分析新方法

刊名：	Mechanism and Machine Theory
作者：	Shuyi Yang（State Key Laboratory of Mechanical Transmission for Advanced Equipment, Chongqing University） Caichao Zhu（State Key Laboratory of Mechanical Transmission for Advanced Equipment, Chongqing University） Chengwu Li（State Key Laboratory of Mechanical Transmission for Advanced Equipment, Chongqing University） Ye Zhou（State Key Laboratory of Mechanical Transmission for Advanced Equipment, Chongqing University） Wenxuan Wang（State Key Laboratory of Mechanical Transmission for Advanced Equipment, Chongqing University） Shengkai Wang（State Key Laboratory of Mechanical Transmission for Advanced Equipment, Chongqing University）
刊号：	780C0013
ISSN：	0094-114X
出版年：	2025
年卷期：	2025, vol.212
页码：	106058-1--106058-28
总页数：	28
分类号：	TH111
关键词：	Wind turbines；Gearbox；Gear modification；Gear；Dynamic；Shaft flexibility
参考中译：	风力涡轮机;齿轮箱;齿轮修改;齿轮;动态;轴灵活性
语种：	eng
文摘：	Wind turbine gearboxes are subjected to coupled excitations from gear cracks, gear modifications, and flexible shaft deformations. However, most existing studies examine the dynamic behavior under isolated excitation conditions. This study proposes a novel dynamic modeling approach for the wind turbine gear-bearing coupling system, combining isogeometric analysis (IGA) and lumped parameter methods. An improved slice method is developed to evaluate the time-varying meshing stiffness (TVMS), considering the gear crack and modifications. Then, the refined integration method is developed to solve the gear contact analysis integrating the system vibration responses. Subsequently, the dynamic model is validated through bench testing, and system dynamic characteristics are thoroughly investigated. The results indicate that gear cracks may shift contact load distribution away from the cracked region, increase bearing contact load amplitude, reduce the bearing's load area, and induce periodic impacts. Additionally, gear axial crown modification (ACM) is more sensitive to the contact load distribution of gear-bearing and alleviates the impact response of the coupled system. Furthermore, the flexibility of the supporting shaft (FS) may lead to tooth disengagement and exacerbate impact vibrations in the system.
参考中译：	风力涡轮机齿轮箱受到齿轮裂纹、齿轮修改和柔性轴变形的耦合激励。然而，大多数现有的研究检查了隔离激励条件下的动态行为。本研究提出了一种新颖的风力涡轮机齿轮-轴承耦合系统动态建模方法，结合等距分析（IGA）和集中参数方法。考虑齿轮裂纹和修改，提出了一种改进的切片法来评估时变咬合硬度（TGMS）。然后，发展了精细积分法来解决综合系统振动响应的齿轮接触分析。随后，通过台架测试对动态模型进行了验证，并深入研究了系统动态特性。结果表明，齿轮裂纹可能会使接触载荷分布偏离裂纹区域，增加轴承接触载荷幅值，缩小轴承载荷面积，并引发周期性冲击。此外，齿轮轴向凸度修改（ACN）对齿轮轴承的接触载荷分布更加敏感，并加剧了耦合系统的冲击响应。此外，支撑轴（FS）的灵活性可能会导致牙齿脱离并加剧系统中的冲击振动。