| Citation: | REN D J，XU S H，WANG S P，et al. Modeling and solution method of oil film dynamic coupling for spherical port pair[J]. Journal of Beijing University of Aeronautics and Astronautics，2023，49（10）：2771-2779 （in Chinese） doi: 10.13700/j.bh.1001-5965.2021.0724
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The multi-field coupling modeling and solution of the friction pair of the piston pump is the basis for the study of the failure mechanism of the piston pump and the improvement of its reliability. To resolve the difficulty, in solving the multi-field coupling model of the spherical port pair of the double-oblique-type axial piston pump, a dynamic coupling model of oil film thickness field-pressure field-temperature field and its solution method are proposed. First, based on the force analysis of the spherical port pair, the Reynolds equation and the energy equation are combined to establish a coupling model of the thickness field-pressure field-temperature field of the spherical port pair. Secondly, the dynamic coupling model is solved based on the finite difference method. Finally, the simulation is compared with the existing model to verify the effectiveness of the proposed model and solution method.
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