进出水孔和过渡圆角对水润滑艉轴承力学性能的影响
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摘要
为提高水润滑动静压艉轴承的承载能力和降低轴承温升,在轴承内部开设型腔结构,并在轴承型腔内开设出水孔。针对不同进水孔直径、出水孔数量和直径以及不同型腔边缘处过渡圆角的艉轴承建立模型,利用ANSYS Workbench软件对艉轴承模型进行静力学分析,研究进出水孔尺寸以及过渡圆角轴承力学性能的影响。结果表明:进水孔直径增大,最大应力、应变和位移值逐渐较小,但是尺寸太大或太小,应力集中现象都比较明显;在艉轴承上设计2个出水孔比单个出水孔具有更好的力学性能;随着型腔边缘处过渡圆角半径的增加,轴承的应力应变和位移逐渐减小,表明光滑的过渡圆角能改善轴承力学性能。
In order to improve the bearing capacity and reduce temperature rise of water lubricated stern bearing,cavity structure was designed inside the bearing,and drainage holes of water was also designed inside the cavity.The model was established for the stern bearings with different inlet holes size,different number and size of drainage holes and different transition fillet of cavity edge.Statics analysis was carried out on the stern bearing model by ANSYS Workbench,and the influence of inlet and drainage holes and transition fillet on the mechanical property of water lubricated stern bearings was studied.The results show that with the increasing of inlet hole size,the maximum stress,strain and displacement are gradually decreased,but if the size is too big or too small,the stress concentration phenomenon is more obvious.The stern bearing with two drainage holes has better mechanical property than that with one drainage hole.Along with increasing of the radius of transition fillet of cavity edge,the stress,strain and displacement of bearing are gradually decreased,which shows that the smooth transition fillet can improve bearing mechanical property.
In order to improve the bearing capacity and reduce temperature rise of water lubricated stern bearing,cavity structure was designed inside the bearing,and drainage holes of water was also designed inside the cavity.The model was established for the stern bearings with different inlet holes size,different number and size of drainage holes and different transition fillet of cavity edge.Statics analysis was carried out on the stern bearing model by ANSYS Workbench,and the influence of inlet and drainage holes and transition fillet on the mechanical property of water lubricated stern bearings was studied.The results show that with the increasing of inlet hole size,the maximum stress,strain and displacement are gradually decreased,but if the size is too big or too small,the stress concentration phenomenon is more obvious.The stern bearing with two drainage holes has better mechanical property than that with one drainage hole.Along with increasing of the radius of transition fillet of cavity edge,the stress,strain and displacement of bearing are gradually decreased,which shows that the smooth transition fillet can improve bearing mechanical property.
引文
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[10]律辉,王优强,卢宪玖,等.基于Ansys的不同螺旋槽艉轴承的结构静力分析[J].润滑与密封,2014,39(3):57-62.LV H,WANG Y Q,LV X J,et al.He static structural analysis of the various spiral groove stern bearing based on Ansys[J].Lubrication Engineering,2014,39(3):57-62.
[2]王新荣,张霞,满连善,等.水润滑轴承的工作原理及结构设计研究[J].佳木斯大学学报(自然科学版),2008,26(5):600-602.WANG X R,ZHANG X,MAN L S,et al.Study on working principle and structure design of water lubricated bearings[J].Journal of Jiamusi University(Natural Science Edition),2008,26(5):600-602.
[3]陈淑江,路长厚,马金奎.出油孔对螺旋油楔动静压滑动轴承性能的影响[J].润滑与密封,2007,32(9):12-15.CHEN S H,LU C H,MA J K.Influence of the outlet hole on performance of a spiral oil wedge hybrid journal bearing[J].Lubrication Engineering,2007,32(9):12-15.
[4]王芳芳,陈渭,张友峰.新型水润滑动静压高速主轴轴承的流场模拟[J].润滑与密封,2010,35(12):28-31.WANG F F,CHEN W,ZHANG Y F.Simulation on the flow fields of a novel water-lubricated static and dynamic hybrid bearing for high-speed spindle[J].Lubrication Engineering,2010,35(12):28-31.
[5]张国渊,袁小阳,苗旭升,等.水润滑高速动静压轴承试验研究[J].摩擦学学报,2006,26(3):238-241.ZHANG G Y,YUAN X Y,MIAO X S,et al.Experiment for water-lubricated high-speed hydrostatic journal bearings[J].Tribology,2006,26(3):238-241.
[6]伍良生,刘振宇,张宝柱,等.带过渡深腔的动压轴承的优化设计与试验[J].机械工程学报,2006,42(11):144-149.WU L S,LIU Z Y,ZHANG B S,et al.Optimization Design And Experiment Of Journal Bearing With Deep Transition Cavity[J].Chinese Journalof Mechanical Engineering,2006,42(11):144-149.
[7]魏颖春.基于有限元法的船舶尾轴承承载仿真研究[D].武汉:武汉理工大学,2009.
[8]张国渊,袁小阳.水润滑动静压轴承三维压力及温度场分布理论研究[J].润滑与密封,2006,31(8):4-7.ZHANG G Y,YUAN X Y.A Theoretical study on three-dimensional pressure distributions and temperature field of water-lubricated hydrostatic journal bearings[J].Lubrication Engineering,2006,31(8):4-7.
[9]王家序,陈战,秦大同.水润滑橡胶轴承的磨粒磨损特性及机理研究[J].润滑与密封,2002,27(3):30-31.WANG J X,CHEN Z,QING D T.Study on wear mechanism and grain-abrasion characteristic of water lubricated rubber bearings[J].Lubrication Engineering,2002,27(3):30-31.
[10]律辉,王优强,卢宪玖,等.基于Ansys的不同螺旋槽艉轴承的结构静力分析[J].润滑与密封,2014,39(3):57-62.LV H,WANG Y Q,LV X J,et al.He static structural analysis of the various spiral groove stern bearing based on Ansys[J].Lubrication Engineering,2014,39(3):57-62.