Numerical modelling of heat dissipation for the pin-on-disc type tribometer

This article presents numerical tests of heat distribution for the Pin-On-Disc type frictional contact. The tests were conducted for the friction pair brass CuZn39Pb2 (pin)-cast iron GJL250 (disc). The heat distribution was tested both experimentally and numerically. Experimental tests were carried out on a conventional CA 6140 lathe properly adapted for these tests. The simulations used the method of elementary balances (MEB) based on an explicit calculation algorithm. The studies were carried out with a normal force of 5N and three cutting speeds of 0.24, 0.35, and 0.48 m/s respectively. The measurements were made after the process had lasted 0, 5, 10, 15, 20, 25, and 30 minutes. As a result of the research, the average and maximum temperature of the measurement point located directly behind the pin-disc contact field was determined. On the basis of the conducted analyses, the imperfection of the applied calculation method was indicated as the probable cause of discrepancies in experimental and simulation results and the acceptance for calculations of constant and time-varying thermo-physical properties of friction pair materials. In addition, the studies proved that a change in the calculation time step has little effect on the average and maximum temperature of the measurement point. © 2021, University of Split. All rights reserved.