考虑进油工况的航发主轴轴承外套圈抗冲击性能研究  

Anti-Impact Performances of Aircraft Engine Spindle Bearings under Oil Injection Conditions

作　　者：韩旭 李泽朝 朱洪波 张浩[1] 高文君[3] 解忠良 HAN Xu;LI Zechao;ZHU Hongbo;ZHANG Hao;GAO Wenjun;XIE Zhongliang(School of Mechanical Engineering,Hebei University of Technology,Tianjin 300401,China;Department of Engineering Mechanics,Northwestern Polytechnical University,Shaanxi Xi’an 710072,China;School of Power and Energy,Northwestern Polytechnical University,Shaanxi Xi’an 710072,China)

机构地区：[1]河北工业大学机械工程学院,天津300401 [2]西北工业大学工程力学系,陕西西安710072 [3]西北工业大学动力与能源学院,陕西西安710072

出　　处：《摩擦学学报(中英文)》2025年第2期210-222,共13页Tribology

基　　金：国家自然科学基金项目(52475214,52105205);航空发动机及燃气轮机基础科学中心项目(P2022-B-Ⅲ-003-001)资助

摘　　要：本文中针对航空发动机主轴轴承外圈抗冲击特性的问题,提出了1种仿莲藕型空心内冷外圈结构,建立了空心内冷结构的动力学模型.采用流固耦合分析方法,研究了不同参数(进油口压力、油密度、空心通道宽度和形状)对轴承抗冲击性能的影响规律;阐明了不同工况和参数对轴承变形及阻尼比的影响机理.结果表明:进油压力和润滑油密度的改变对外圈变形和应力几乎没有影响,但空心通道宽度和通道形状对外圈变形和应力有较大影响;润滑油密度的改变对于外圈阻尼比没有影响;进油口压力、空心通道宽度以及通道形状对外圈阻尼比有明显影响.研究结果对主轴轴承提高冷却效率和抗冲击性能有重要意义.In order to solve the problem of impact resistance of the outer ring of the aero-engine main shaft bearing,a kind of hollow inner cooling structure like lotus root was proposed in this paper,and a dynamic model of the hollow inner cooling structure was established.The influence of parameters such as inlet pressure,oil density,hollow channel width and shape on the impact resistance performance of bearings was studied using fluid structure coupling analysis;The influence mechanism of different working conditions and parameters on bearing deformation and damping ratio was elucidated.The results showed that the changes in inlet pressure and lubricant density had almost no effect on the deformation and stress of the outer ring,but hollow channel width and channel shape had a significant impact on the deformation and stress of the outer ring;The change in lubricant density had no effect on the damping ratio of the outer ring;The inlet pressure,hollow channel width,and channel shape had a significant impact on the damping ratio of the outer ring.The research results were of great significance for improving cooling efficiency and impact resistance of spindle bearings.

关 键 词：主轴轴承 空心通道 流固耦合 外圈变形 阻尼比 

分 类 号：TH117.2[机械工程—机械设计及理论] TH117.3