[1]王亚兵,刘洋洋,王报龙,等.轴颈倾斜的水润滑橡胶艉轴承的静态特性[J].西安交通大学学报,2020,54(05):061-69.[doi:10.7652/xjtuxb202005009]
 WANG Yabing,LIU Yangyang,WANG Baolong,et al.Static Characteristics of Water Lubricated Rubber Stern Bearings with Misaligned Journal[J].Journal of Xi'an Jiaotong University,2020,54(05):061-69.[doi:10.7652/xjtuxb202005009]
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轴颈倾斜的水润滑橡胶艉轴承的静态特性
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《西安交通大学学报》[ISSN:0253-987X/CN:61-1069/T]

卷:
54
期数:
2020年第05期
页码:
061-69
栏目:
出版日期:
2020-05-10

文章信息/Info

Title:
Static Characteristics of Water Lubricated Rubber Stern Bearings with Misaligned Journal
文章编号:
0253-987X(2020)05-0061-09
作者:
王亚兵1 刘洋洋1 王报龙1 祝长生2 袁小阳1
1.西安交通大学现代设计及转子轴承系统教育部重点实验室, 710049, 西安; 2.浙江大学电气工程学院, 310027, 杭州
Author(s):
WANG Yabing1 LIU Yangyang1 WANG Baolong1 ZHU Changsheng2 YUAN Xiaoyang1
1. Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi’an Jiaotong University, Xi’an 710049, China; 2. College of Electrical Engineering, Zhejiang University, Hangzhou 310058, China
关键词:
轴颈倾斜 水润滑 橡胶轴承 静态特性
Keywords:
journal misalignment water lubrication rubber bearing static characteristics
分类号:
TH133.31
DOI:
10.7652/xjtuxb202005009
文献标志码:
A
摘要:
针对船舶艉轴承轴颈受载倾斜产生的摩擦磨损问题,建立了圆周式和沟槽式水润滑橡胶轴承中分面轴颈中心为基点的轴颈倾斜下的弹流润滑模型,采用有限差分法求解了在轴颈对中和轴颈倾斜状态下的压力及膜厚分布,分析了轴颈倾斜角变化对轴承油膜力、油膜力矩及压力中心等静态特性的影响。研究结果表明:轴颈倾斜前后,圆周式和沟槽式轴承静态特性变化明显,最大油膜压力在倾斜角增加超过某一阈值后迅速增长,最小油膜厚度随轴颈倾斜角增加而减小至可允许最小膜厚; 由于轴颈倾斜后油膜压力沿轴向不再呈对称分布,压力中心向下沉端方向移动,继而产生油膜力矩且其值从0增大; 轴颈可允许最大倾斜角随偏心率、允许最小膜厚等增大而减小。研究结果可为轴颈倾斜状态下水润滑橡胶轴承的润滑性能优化提供参考。
Abstract:
In view of the friction and wear caused by inclination of the stern bearing journal under load, the elastohydrodynamic lubrication models of the circular and grooved water lubricated rubber bearings with the journal center of the split plane as the base point are established. The pressure and film thickness distributions of the water lubricated rubber bearing in journal alignment and misalignment states are solved by finite difference method. The influences of journal inclination angle on the static performances of the bearing such as oil film force, oil film moment and pressure center are discussed. The results show that the static characteristics of the circular and grooved bearings change obviously after journal tilting. The maximum oil film pressure increases rapidly when the inclination angle increases beyond a certain threshold. Meanwhile, the minimum oil film thickness decreases to the allowable minimum thickness with the increase of the inclination angle of the journal. Besides, since the oil film pressure is no longer symmetrical to the axial direction after the journal inclination, the pressure center moves towards the sinking end. As a result, the oil film moment is produced and its value increases from zero. In addition, the allowable maximum journal inclination angle decreases with the eccentricity and the allowable minimum film thickness. This study may provide reference for the static performance optimization of water lubricated rubber bearings under journal tilting conditions.

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备注/Memo

备注/Memo:
收稿日期: 2019-12-18。作者简介: 王亚兵(1995—),男,硕士生; 袁小阳(通信作者),男,教授,博士生导师。基金项目: 基础产品创新科研资助项目(CZ362); 国家自然科学基金资助项目(51775412)。
更新日期/Last Update: 2020-05-10