Dynamic Characteristics Analysis on Axial Piston Pump Based on Virtual Prototype Technology

In order to develop a new type of high-performance axial piston pump,Kane-Huston method is used to establish the mechanical-hydraulic coupling multi-body dynamics model of the axial piston pump based on the analysis of its work principle and the law of motion,the hydraulic system model is established based on fluid characteristics and control theory of axial piston pump and virtual prototype model is built by the real-time interface connection between them.A virtual prototype model of a certain swashplate axial piston pump was built and its numerical solution and simulation are conducted,the results of numerical solution and simulation are basically the same.The motion characteristics of mechanical-hydraulic coupling action in piston pump,the flow and pressure ripple characteristics of pump outlet and the flow control characteristics of piston pump are researched,the factors and change rules which influence the dynamic characteristics of piston pump are researched.The modeling and simulating methods based on the technologies of virtual prototype can predict the performance of the axial piston pump in a full range,it is becoming the important method in study of axial piston pump design and performance.