机械科学与技术2024，Vol.43Issue(2)：187-196,10.DOI:10.13433/j.cnki.1003-8728.20220212
考虑齿面闪温的风电齿轮箱裂纹故障特征分析
Crack Fault Characteristic Analysis of a Wind Turbine Gearbox with Flash Temperature Considered
摘要
Abstract
In order to study the influence of the flash temperature on the crack fault characteristic of a wind turbine gearbox,the temperature and profile deformation of the tooth are calculated using the Blok flash temperature theory and thermal deformation formula,respectively,and the tooth stiffness considering the flash temperature is obtained using the Hertz contact theory.For the gearbox with crack fault occurred on the tooth root of the high-speed gear,the torsional dynamic model is established considering flash temperature,damping,meshing stiffness,transmission error and backlash.The variation laws of the vibration characteristics with flash temperature are investigated under different crack conditions through time domain,frequency spectrum,phase diagram and Poincaré section,and the numerical results in the time-frequency domain are compared with those of the test without considering the flash temperature.The results show that the flash temperature makes the impact amplitude from the crack in the time domain increase,the fault side frequency be more complex,the phase diagram expand and the number of discrete points in Poincaré section increase,and the changes are more obvious with increasing the crack length.The research provides the basis for diagnosing and monitoring the gear crack fault state.关键词
风电齿轮箱/裂纹故障/齿面闪温/时变啮合刚度Key words
wind turbine gearbox/crack fault/tooth flash temperature/time-varying meshing stiffness分类
机械制造引用本文复制引用
张旭,钟家欣,李伟..考虑齿面闪温的风电齿轮箱裂纹故障特征分析[J].机械科学与技术,2024,43(2):187-196,10.基金项目
国家自然科学基金项目(51805369)与天津市科技计划项目(20YDTPJC00820) （51805369）
