The finite difference method was used to discretely treat the micro-texture surface of the axial piston pump,and the overrelaxation iterative method was used to solve the fluid equation of the micro-texture surface,and the oil film pressure distribution of the micro-texture was obtained.The oil film thickness and oil film pressure of the micro-texture valve plate pair were simulated by MATLAB software,and the influence of micro-texture on the lubrication characteristics of the oil film of the valve plate pair was analyzed.The results show that the micro-texture can significantly change the thickness and pressure distribution of the oil film,resulting in dynamic pressure effect.The maximum pressure of the non-micro-texture surface is 0.106 4 MPa,and the maximum pressure of the micro-texture distribution secondary surface is 0.152 MPa,which improves the bearing capacity of the oil film.
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