Simulation of Temperature Field of Ring-block Friction Based on Rotating Heat Flux Method and Uniformly Distributed Heat Flux Method

doi:10.3901/JME.2020.04.151

Abstract

Abstract: Aiming at the insufficient research of the influence of the frictional heat flux loading method on the temperature field of the ring under the ring-block friction condition, the difference and intrinsic connection of the temperature field of the ring calculated by the two frictional heat flux loading methods (rotating heat flux method and uniformly distributed heat flux method) is investigated. The calculation results show that the highest temperature point (called A₀ point) of the ring under the ring-block friction condition appears at the center line of the ring-block friction surface, and the calculated temperature and its change characteristics of the A₀ point based on the two heat flux loading methods are quite different. Below point A₀, with the increase of the distance below the ring-block friction surface, the differences between the temperature and its change characteristics calculated by the two frictional heat flux loading methods decrease rapidly, and for the point of 2 mm below the ring-block friction surface, the differences can be approximately ignored. At the same time, with the increase of the ring-block friction time, the temperature of point A₀ increases continuously, but the temperature fluctuation of point A₀ calculated by the rotating heat source method and the temperature difference of point A₀ calculated by the two frictional heat flux loading methods tend to be stable rapidly. Based on this, a fast algorithm for calculating the maximum temperature value of the ring is proposed. In addition, the influence of different ring-block friction conditions (rotational angular velocity of the ring, ring-block pressure, ring material and central angle of the arc surface of the ring-block contact) on the ring temperature field is systematically investigated, and the variation law of the temperature fluctuation of point A₀ under different ring-block friction conditions is revealed. A theoretical basis is provided for the selection of the frictional heat flux loading method in the calculation of the ring temperature field under the ring-block friction condition.

Key words: ring-block friction, temperature field, rotating heat source method, uniformly distributed heat source method

CLC Number:

U270

ZHANG Jinyu, YU Dalian, LIU Shaoqing, TIAN Aiqin. Simulation of Temperature Field of Ring-block Friction Based on Rotating Heat Flux Method and Uniformly Distributed Heat Flux Method[J]. Journal of Mechanical Engineering, 2020, 56(4): 151-159.

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