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基于有限元法进出水孔和过度圆角对水润滑动静压艉轴承力学性能的影响
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国家自然科学基金项目(51575289)


Influence of Inlet and Drainage Holes and Transition Fillet on Mechanical Property of Water Lubricated Stern Bearings
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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。

    Abstract:

    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.

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王建,王优强,王涛,范晓梦.基于有限元法进出水孔和过度圆角对水润滑动静压艉轴承力学性能的影响[J].润滑与密封,2017,42(3):65-70.
. Influence of Inlet and Drainage Holes and Transition Fillet on Mechanical Property of Water Lubricated Stern Bearings[J]. Lubrication Engineering,2017,42(3):65-70.

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  • 在线发布日期: 2017-06-14
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