Analysis of Fluid-structure Coupling of High Overload Grease Lubricated Ball Screw Pair
The vibration and impact of grease lubrication on the ball screw pair belong to a complex fluid-structure coupling process.In order to describe the interaction between grease and ball screw,the model of the fluid-structure coupling between the ball screw pair and the grease is established.The coupled Lagrangian-Eulerian algorithm is applied to analyze the grease flow and contact stress of the contact raceway of the ball screw pair under the action of rotational speed and axial load.The results show that in consideration of lubrication,the force on the ball screw raceway is more uniform,and the contact stress is reduced by 18％compared with that without considering the grease,which provides certain selection criteria for the selection and design of the aerospace ball screw pair.
万方数据
维普
