摘要
根据流体力学有限元理论，采用四节点等参单元，对新型推力轴承轴瓦的力学模型作了进一步的分析和研究；以最佳承载能力范围内摩擦功耗最小为目标函数，计算动压油膜的温度场及轴瓦的热变形对最优参数的影响；建立了各主要参数（油膜厚度、油楔角、承载能力等）与摩擦力矩的关系曲线。将所得的数据和以前研究的论文（未考虑轴瓦的热变形）比较分析，并在可逆式动压推力轴承实验台上作了进一步的实验研究，测量了瓦面的温度场和摩擦力矩。结果证明：理论计算正确，编制的可计算不同工况最优工作参数的程序更符合实际；并建议在实际调整最小油膜厚度时，需增加该值的１３％以补偿热变形等结论都有参考价值。
According to the theory of hydrodynamic finite element, using the four-nodeelement method,the mechanical mdel of the new type of bearing is analysed.Under the optimalload capacity,regarding minimum friction loss as an object function,authors research into theinfluence of the temperature field of the hydrodynamic oil film,and of the thermal deformation ofthe pad. The relationship curves of major parameters, such as oil film thickness,angle of oilwedge,loading capacity and so on,can describe the friction torque. The new data gainedcompares with the former research(the thermal deformation of the pad is not accounted),andthe test and study are made on the reversible hydrodynamic thrust bearing testing equipnYent.The temperature field and friction torque on the pad face are measured.The computer programwhich can be used for calculating the optimal parameter under many different conditionsaccurately simulates real conditions.It is shown that the minimum oil film thickness need to beincreased by about 13%,so as to compensate for the thermal deformation when it’s adjusted.Theideahas reference value.
出处
《大连理工大学学报》
CAS
CSCD
北大核心
1995年第4期505-510,共6页
Journal of Dalian University of Technology
基金
国家自然科学基金资助项目
关键词
温度场
有限元法
推力轴承
油膜
轴瓦
temperature field
finite element methods
thrust bearings
oil film
