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《Journal of Hunan University(Natural Sciences)》 2014-01
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FEM Analysis of the Static and Dynamic Characteristics of Self-compensating Hydrostatic Bearing

ZUO Xiao-bo;YIN Zi-qiang;WANG Jian-min;LI Sheng-yi;College of Mechatronic Engineering and Automation,National Univ of Defense Technology;  
Theoretical and experimental studies were carried out on a new type of self-compensating biconic hydrostatic bearing.The structure and operating principle of self-compensating bi-conic hydrostatic bearing was introduced.Theoretical models of the lubrication film were built with perturbation method, and the influence of rotor motion on the restrictor gap was taken into account for the self-compensation restricting equation.The model was solved in finite element method(FEM)and was validated with experiments.Load carrying capacity,fluid flow rate,stiffness and damping coefficients were studied.The results have shown that the self-compensating hydrostatic bearing has higher radial load carrying capacity than fixed-slot compensating bearing under the same condition,and it has high stiffness coefficients when used under low load.
【Fund】: 国家自然科学基金资助项目(50805143);; 国家科技重大专项“高档数控机床与基础制造装备”项目(2010ZX04001-151)
【CateGory Index】: TH133.36
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