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Abstract
Abstract The high thermal stresses generated at the interface between the contacting surfaces due to the sliding between parts of sliding system such as friction clutches and brakes. In this work, pin-on-disc test rig was built to find the temperature field during the sliding operation using experimental and numerical approaches. In the experimental approach, infrared camera was used to find the temperature distribution, while in the numerical approach a finite element technique has been used. Analysis has been completed using three-dimensional model to simulate a pin-on-disc system. The numerical results have shown a good agreement compared with the experimental results.
Highlights
At beginning of the engagement of friction clutch the slipping will occur between the contacting surfaces and high energy will dissipate during this period
As a result of this situation, the high temperature and contact pressure will focus on a small zone of the contact area and this will lead in some cases to premature failure in the friction clutch surfaces
The results show that the operating characteristics of the brake have potential effects on the surface temperature distribution and the maximum contact temperature
Summary
At beginning of the engagement of friction clutch the slipping will occur between the contacting surfaces and high energy will dissipate during this period. The frictional heat generated at the sliding interface causing an increase in the surface temperature of the contacting surfaces of the clutch elements (flywheel, clutch disc and pressure plate in a single-disc clutch system). Axisymmetric finite element model was built to study the temperature field and the pressure distribution of two sliding disks. Gao and Barber [10] simulated the engagement of wet clutches using Berger’s model and torque equations They studied the fluid viscosity, friction characteristics, material permeability, moment of inertia, groove area ratio, and Young's modulus. The surface temperature of the clutches depends on the sliding speed and the contact pressure. In this work thermoelastic model is developed to investigate the heat generated (heat flux) and the temperature field of a pin-on-disc system during sliding operation. A pin-on-disc system has been built to measure the temperature field (using infrared camera) and compare the results with the results obtained using numerical approach
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