基于静压平衡理论的滑靴摩擦副流固耦合分析

Fluid-Structure Coupling Analysis of Slipper Friction Pair Based on Hydrodynamic Lubrication Theory

应用流固耦合原理和静压支撑理论,研究滑靴底面油膜的动态变化特性,并利用有限元软件ANSYS实现了滑靴同油膜之间的流固耦合计算.模拟结果表明:(1)柱塞由低压区运动到高压区时与柱塞从高压区运动到低压区时,油膜变化情况有显著差别.(2)滑靴底面在油液压力作用下产生楔形应变,从而生成楔形油膜.(3)流固耦合理论有助于理解滑靴油膜变化过程.

Applied fluid-structure coupling principle and static pressure supporting theory,dynamic characteristics of slipper bottom film were studied,and the finite element software ANSYS had been used for simulate calculation of fluid-structure coupling between slipper bottom and film.The simulation results showed that：（1）Compare to the circumstance when the plunger translated from low pressure region to high pressure region,there was significant difference in the circumstance from high pressure region to low pressure region.（2）The lubricant pressure of the slipper inner hole and the film cause wedged strain which appeared on the slipper bottom,and then generated wedge oil film.（3）Fluid-structure coupling principle was helpful to understand the change process of the oil film.