Page 183 - 《振动工程学报》2025年第11期
P. 183

第 38 卷第 11 期                      振 动 工 程 学 报                                      Vol. 38 No. 11
               2025 年  11 月                    Journal of Vibration Engineering                       Nov. 2025



                    耦   合    曲   轴   振   动   的    柴   油   机   翻   边    轴   瓦   润   滑   性    能   分   析



                  施佳皓 , 赵 滨 , 徐含章 , 张宇祥 , 刘 洋 , 解忠良 , 卢熙群 , 郭怀谦                                           2
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                  (1. 哈尔滨工业大学苏州研究院,江苏 苏州 215104; 2. 哈尔滨工程大学动力与能源工程学院,黑龙江 哈尔滨 150001;
                3. 福建省能源材料科学与技术创新实验室(IKKEM),福建 厦门 361005; 4. 武汉第二船舶设计研究所,湖北 武汉 430061;
                                      5. 西北工业大学力学与交通运载工程学院, 陕西 西安 710072)
              摘要:翻边轴瓦是一种集径向与止推功能于一体的特殊滑动轴瓦,在恶劣工况下,其径向与止推部分同时承载,使得润滑性能
              受径向-止推双结构耦合效应及曲轴振动的综合影响。为更加精准地阐释动载工况下翻边轴瓦的瞬态润滑特性,提升其运行
              可靠性,本研究基于径向-止推交界面的滑油热、压力、流量连续性条件构建了翻边轴瓦双结构润滑耦合关系,建立了考虑径
              向-止推耦合润滑效应的翻边轴瓦瞬态热弹流混合润滑模型,在此基础上,以时变油膜刚度作为耦合媒介,形成了曲轴振动与
              翻边轴瓦润滑的双向耦合分析方法,并分析了曲轴振动对轴瓦润滑特性的影响。结果表明,与传统将曲轴振动与轴瓦润滑分
              开求解的方法相比,该模型得到的翻边轴瓦在工作周期内的润滑性能曲线形状发生改变,同时周期最大油膜压力有所降低,
              周期最小油膜厚度有所增加,基于该模型可为曲轴翻边轴瓦高精度润滑计算提供更加完善的理论支撑和方法工具。

              关键词: 瞬态分析;热弹流润滑;曲轴振动;耦合作用;翻边轴瓦
              中图分类号:TH133.31        文献标志码:A        DOI:10.16385/j.cnki.issn.1004-4523.202508036


                      Analysis of lubrication performance for journal-thrust coupled bearings

                                  in diesel engines with coupled crankshaft vibration

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               SHI Jiahao ,ZHAO Bin ,XU Hanzhang ,ZHANG Yuxiang ,LIU Yang ,XIE Zhongliang ,LU Xiqun ,GUO Huaiqian 2
                 (1.Harbin Institute of Technology Suzhou Research Institute,Suzhou 215104,China;2.College of Power and Energy Engineering,
                Harbin Engineering University,Harbin 150001,China;3.Innovation Laboratory for Sciences and Technologies of Energy Materials of
                Fujian Province (IKKEM),Xiamen 361005,China;4.Wuhan Second Ship Design and Research Institute,Wuhan 430061,China;
                     5.School of Mechanics and Transportation Engineering,Northwestern Polytechnical University,Xi’an 710072,China)
              Abstract:The journal-thrust coupled bearing is a special type of sliding bearing that integrates journal and thrust parts. Under harsh operating
              conditions, its  journal  and  thrust  parts  bear  loads  simultaneously, causing  the  lubrication  performance  to  be  affected  by  the  combined
              influence of the journal-thrust dual-structure coupling effect and crankshaft vibration. To more accurately elucidate the transient lubrication
              characteristics  of  the  journal-thrust  coupled  bearing  under  dynamic  loading  conditions  and  enhance  its  operational  reliability, this  study
              established a dual-structure lubrication coupling relationship for the journal-thrust coupled bearing based on the continuity conditions of oil
              temperature, pressure, and  flow  at  the  journal-thrust  interface.  A  transient  thermal  elastohydrodynamic  mixed  lubrication  model  was
              developed,considering the journal-thrust coupled lubrication effect. Based on this,a bidirectional coupling analysis method for crankshaft
              vibration  and  the  lubrication  of  journal-thrust  coupled  bearings  was  established  using  time-varying  oil  film  stiffness  as  the  link, and  the
              influence  of  crankshaft  vibration  on  the  bearing  lubrication  characteristics  was  analyzed.  The  results  show  that, compared  to  traditional
              methods that solve crankshaft vibration and bearing lubrication separately,the lubrication performance curve of the journal-thrust coupled
              bearing over its operating cycle changes in shape when obtained using this model. Additionally,the maximum oil film pressure per cycle
              decreases,while the minimum oil film thickness per cycle increases. This model provides a more comprehensive theoretical foundation and
              methodological tool for high-precision lubrication calculations of crankshaft journal-thrust coupled bearings.
              Keywords:transient analysis;thermal elastohydrodynamic lubrication;crankshaft vibration;coupled effect;journal thrust coupled bearing


                  柴油机翻边轴瓦是一种位于曲轴末端的特殊结                          恶劣,特别是当曲轴受到轴向冲击载荷时,翻边轴瓦
              构轴瓦,在柴油机实际运行过程中,其工作条件较为                           不仅需同时承受轴向与径向载荷,还面临高载荷、


                  收稿日期:2025-08-13;修订日期:2025-10-15
                  基金项目:国家自然科学基金资助项目(52271312);黑龙江省自然科学基金优秀青年项目(YQ2024E037)
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