Abstract:  Aiming at the problem of temperature characteristics of piston pump of port plate pair, the mathematical model of piston pump of port plate pair was established, considering the elastic deformation, the temperature characteristics of piston pump port pair were studied. The mathematical model was calculated and simulated by using Fortran and MATLAB software, the elastic deformation form of port plate pair under the action of oil film pressure was calculated, thermal elastohydrodynamic of port plate pair was obtained, the maximum oil film temperature under different operating parameters was compared, and the effects of single parameters for the temperature characteristics of oil film such as oil viscosity of oil film, cylinder speed, tilt angle, initial oil film thickness, and seal band width on the temperature characteristics of oil film were analyzed, the temperature characteristics of port plate pair without elastic deformation was compared. Finally, the temperature test experiment was set to verify the correctness of the calculated results. The results indicate that in these two cases, when the oil viscosity is different, the influence trend of each working condition parameter on temperature is consistent, and under the condition of considering the elastic deformation, the influence degree of the working condition of the parameters on the temperature is different, The results provide the theoretical and calculation basis for the future research on the thermalfluidstructure coupling of piston pump of port plate pair.

Key words:  port plate pair; elastic deformation; temperature characteristics; ermal-fluid-structure coupling

CHENG Jun, WANG Zhao-qiang, WANG Yu-fan, et al. Temperature characteristics of port plate pair of piston pump considering elastic deformation［J］.Journal of Mechanical & Electrical Engineering, 2021,38(8):982-988.