Abstract
The work describes methods of analysis of stress-strain state of hydrovolumetric drives elements that are in contact interaction. A variational problem statement is proposed. Modifications of boundary element method are developed. The analysis focused on several structural factors that have the most profound impact on the deformed state of the most loaded elements of the drive. Those include the number of cylinders in the rotor and the geometry of tracks on the internal surface of the stator ring along wich the spherical pistons are running. Hydrostatic load from the oil under the piston in any particular cylinder as well as the adjacent cylinders lead to non-uniform radial defomations. The contact size and contact pressure distribution depend on the initial gap between stator surface and the spherical piston. The influence of the running track profile on the contact ineraction has been determined by numerical analysis. The acquired database serves for the parameter justification and design recommendation for the radial hydrovolumetric drives.
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