摘要
为探究齿面沟槽织构参数对渐开线圆柱直齿轮润滑性能的影响,简化齿轮啮合模型选取并建立单元沟槽CFD仿真模型,通过分别求解未考虑和考虑空化效应的2种仿真模型,获得不同沟槽尺寸参数对模型润滑性能的影响规律。结果表明:沟槽织构的存在改变了流体域油膜压力分布状态,具有更高的油膜承载力和更好的动压性能;不考虑空化效应时,油膜承载力大小与沟槽宽度的变化密切相关,而受沟槽深度变化的影响较小,沟槽织构浅且宽时齿面具有更好的润滑性能;考虑空化效应后,表面润滑性能随沟槽宽度与深度的变化而动态变化,相较于不考虑空化效应,沟槽宽度更窄、深度更深时齿面具有更好的润滑性能;在沟槽深度与宽度均较小时,空化效应对动压性能的影响不是很大,在沟槽深度较小而沟槽宽度较大时,空化效应对动压性能的影响较大;而在沟槽深度较大时,空化效应对动压性能的影响始终较大,且不受沟槽宽度变化的影响。
In order to investigate the influence of tooth surface groove texture parameters on the lubrication performance of involute spur gears,the gear meshing model was simplified and the unit groove CFD simulation model was established.By solving the two simulation models without and with considering the cavitation effect,the influence rules of different groove dimension parameters on the lubrication performance of the model were obtained.The results show that the distribution state of oil film pressure in the fluid domain changes by the groove texture,and higher oil film bearing capacity and better dynamic pressure performance are obtained.When cavitation effect is not considered,the oil film bearing capacity is closely related to the change of groove width,but is less affected by the change of groove depth.When the groove texture is shallow and wide,the tooth surface has better lubrication performance.When the cavitation effect is taken into account,the surface lubrication performance changes dynamically with the change of groove width and depth.Compared with no cavitation effect,the gear surface has better lubrication performance when the groove width is small and the depth is large.When the groove width and depth are both small,the cavitation effect has a small influence on dynamic pressure performance.When the groove depth is small and the groove width is large,the cavitation effect has a great influence on dynamic pressure performance.While the groove depth is large,the cavitation effect always has a great influence on the dynamic pressure performance,and is not affected by the change of the groove width.
作者
仁青多吉
朱佩元
常雪峰
林秉敬
舒霞云
RENQING Duoji;ZHU Peiyuan;CHANG Xuefeng;LIN Bingjing;SHU Xiayun(Key Laboratory of Precision Actuation&Transmission of Fujian Province University(Xiamen University of Technology),Xiamen Fujian 361024,China;College of Marine Equipment and Mechanical Engineering,Jimei University,Xiamen Fujian 361021,China)
出处
《润滑与密封》
CAS
CSCD
北大核心
2022年第12期91-99,共9页
Lubrication Engineering
基金
国家自然科学基金项目(51875491)
福建省自然科学基金项目(2020J01274)。
关键词
齿轮
沟槽织构
空化效应
润滑性能
gear
groove texture
cavitation effect
lubrication performance
