Abstract: At present, the effects of surface elastic deformation due to oil pressure on the load-carrying characteristics of high-pressure hydrostatic bearing are not considered when designing this kind of bearing. And there are much more differences between the theory and practice, which may even results in the failure of the lubrication of hydrostatic bearing. In this paper, the pressure distribution of the oil film and the load-carrying characteristics of high pressure hydrostatic bearing are analyzed on the basis of considering the oil viscosity effect and the effect of pressure on elastic deformation of bearing surface, and which are verified by the experiment of laser photo elastic procedure. So a new calculation theory, the elastohydrostatic lubrication theory is presented in this paper for the designing of high pressure hydrostatic bearing.

Key words: 光弹试验, 静压支承, 流体静压润滑