Virtual Prototype Modeling And Simulation Platform Research Of Axial Piston Pump

Axial piston pump, the power component, is highly coupled with mechanism and fluid. Relevant research mainly focuses on the coupling characteristics. Based on Virtual Prototype Technology, Virtual Simulation Package of Axial piston pump (ViSPA) is developed and the key technologies of liquid-solid coupling and rigid-flex coupling are investigated in this thesis.ViSPA is developed to package the complex process of virtual prototype, as well as providing friendly and convenient interface. Based on the characteristics of axial piston pump, ViSPA is composed of mechanism module and fluid module. Parametric modeling module and flexible module make up the mechanism, while hydraulic module and state variable module, as well as oilfilm module, are the compositions of fluid. Development principle and key technology of each module are analyzed in detail. Credibility and accuracy of the ViSPA macroscopic parameters forecast are verified based on experimental results. Practical application ability of ViSPA is proved by the analysis of the characteristics of relevant mechanism and fluid.In chapter 1, the overview of axial piston pump and concept of virtual prototype technology were introduced. The domestic and foreign research progress on virtual prototype of axial piston pump were reviewed. The main research content and idea were identified and the difficulties of this study were also presented.In chapter 2, the development principle of parametric modeling module and flexible module were described, as well as key technologies were analyzed. Based on parametric modeling module, geometric model of LA4V type axial piston pump was built.In chapter 3, fluid characteristics of axial piston pump were analyzed. Hydraulic model based on AMESim was built. In order to package hydraulic model, hydraulic module was compiled by use of AMESim scripting language. State variable module was developed using ADAMS secondary development language.In chapter 4, the composition of ViSPA functional structure, key technologies of the main interface as well as data transmission of each module were analyzed.In chapter 5, credibility and accuracy of ViSPA was assessed. Relevant characteristics of mechanism and fluid were predicted based on it.In chapter 6, major research and key technologies of ViSPA in this thesis were summarized. Future research proposals were suggested.