Abstract
The dynamic analysis model of axial piston pump was established; both the kinematics and dynamics simulation analysis were conducted by virtual prototyping approach. The displacement, velocity, acceleration and stress curves of the piston under different working conditions were investigated. In addition, a ball-in-socket contact model was established, and the effects of hydraulic pressure, piston radius and radial clearance on normal displacement, contact radius, maximum contact pressure, normal contact stiffness and tangential contact stiffness were analyzed comprehensively. The results indicate that the normal displacement, maximum contact pressure, contact radius, normal contact stiffness and tangential contact stiffness can be improved by enlarging the piston radius and decreasing the radial clearance.
Highlights
The high pressure trend of hydraulic transmission makes the utilization of piston pump more and more widely [1]
Axial piston pump has the advantages of high efficiency, stable reliability, high output pressure and compact structure, which is widely used in hydraulic system as the power source
The results showed that the normal contact stiffness can be improved by increasing the piston radius, material hardness, reducing the radial clearance and friction coefficient; Gaston [16] conducted research on the reasons, and solutions to deformation and fracture that leads to the loss of performance of the axial pistons pump, and proposed some suggestions to improve the life span of axial piston machines; Shi [17] researched the tangential contact stiffness of cylindrical asperities
Summary
The high pressure trend of hydraulic transmission makes the utilization of piston pump more and more widely [1]. Axial piston pump has the advantages of high efficiency, stable reliability, high output pressure and compact structure, which is widely used in hydraulic system as the power source. Due to the mechanical vibration and harsh hydraulic impact during operation, it is easy to cause failure and even cause equipment damage It has a great demand for long life, high performance and low noise axial piston pump. Guan [12,13,14,15] utilized the fractal theory to study the conformal contact between piston and cylinder block in spherical pump, investigated the effects of structural parameters such as piston radius, radial clearance and material properties on the contact coefficient.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
