Design and Simulation Analysis of Hydrostatic Supporting Excitation Hydraulic Cylinder

This paper designs an excitation servo hydraulic cylinder which uses clearance seal and hydrostatic supporting technology for high-speed railway subgrade dynamic response in-situ test system. It puts forward a structure with dynamic pressure chamber and static pressure chamber and calculates the main parameters of the cylinder. The paper briefly introduces the principle of hydrostatic supporting and analyzes the flow characteristics of the hydrostatic supporting oil chamber by simulation based on Fluent.