摘要：为贯彻落实习近平总书记视察学校重要指示精神，落实落细学校2025年学科建设任务，图书馆推出高水平论文，助力师生捕捉学科领域前沿热点、聚焦原创性突破，繁荣学术交流，不断提升学校学术成果影响力。
为贯彻落实习近平总书记视察学校重要指示精神，落实落细学校2025年学科建设任务，图书馆推出高水平论文，助力师生捕捉学科领域前沿热点、聚焦原创性突破，繁荣学术交流，不断提升学校学术成果影响力。
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TRIBOLOGY AND DYNAMIC CHARACTERISTICS OF TEXTURED JOURNAL-THRUST COUPLED BEARING CONSIDERING THERMAL AND PRESSURE COUPLED EFFECTS
作者：Zhao, Bin;Shi, Jiahao
来源：TRIBOLOGY INTERNATIONAL, 2023, Volume 180.
滑动阅读摘要
The journal-thrust coupled bearing in diesel engine operates under complex load and high working temperature. Under extreme working conditions, it supports the crankshaft and prevents its axial movement through the lubrication of journal and thrust parts. This study is mainly aimed to establish the thermal elastohydrodynamic (TEHD) lubrication analysis model for textured journal-thrust coupled bearing, which considered the thermal and pressure coupled effects in the lubrication process by proposing the flow, pressure and thermal continuity conditions between the journal and thrust parts. A specific coupled bearing testing equipment was set up and the experimental results validated the correctness of the TEHD lubrication model. Necessity of considering thermal and pressure coupled effect was confirmed through comparison of different models. Apart from that, parametric analyses were conducted to explore the influences of thermal and pressure coupled effects on lubrication performances and dynamic characteristics under different eccentricity ratio of journal part, geometry film thickness of thrust part and surface topography (mainly realized by texture distribution of thrust part).
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