Experimental investigation of transient thermal characteristics of a dry friction clutch using alternative friction materials under different operating conditions
Sherzaa J.S. Hussain I.Y. Abdullah O.I.
July 2022John Wiley and Sons Inc
Heat Transfer
2022#51Issue 53920 - 3950 pp.
The thermal characteristics of four types of dry friction clutch materials (LUK, G95, HCC, and Tiger) are investigated experimentally and numerically in the present work under different working conditions; such as initial sliding angular velocity (ωro), torque (T), and sliding time (ts). The temperature distributions over a cross-section of friction clutch elements (pressure plate and flywheel) are investigated and optimized during the sliding period (heating phase), and full engagement period (cooling phase). The effect of alternative frictional materials lining of a clutch disc on the thermal behavior of the sliding system under different operating conditions (different angular velocities, torques, and sliding periods) is investigated experimentally. The results showed that the maximum effect on the temperature values occurred when applying maximum torque (4.5 kg·m), maximum initial rotational speed (1200 rpm), slipping period (30 s). However, the temperature values at interface contact decrease when decreasing all the above input conditions values to (2.5 kg·m, 690 rpm, and slipping period to 8 s). The results showed that the temperature reduced (53%) from (180.4°C) for applied torque 4.5 kg·m with initial rotational speed (1200 rpm) and slip period (30 s) to (83.3°C) when applied torque 2.5 kg·m, initial rotational speed (680 rpm) and slip period (8 s) for clutch disc (LUK). It was obtained the same behavior for the other three discs (G95, HCC, and Tiger), but with different values of temperatures. The results show that the temperatures of the pressure plate interface (Tmax = 159.1°C) are higher than those at the flywheel interface (Tmax = 152.7°C), due to the low thermal capacity of pressure plate compared to the flywheel when using G95 frictional material. The experimental optimization results showed that the highest temperatures were obtained when using friction clutch disc (LUK), and minimum temperature when using (HCC) disc, around (20%) reduction when replaced (LUK) material with (HCC) under the same working conditions (T = 4.5 kg·m, ωro = 1200 rpm, and ts = 30 s).
alternative fractional material , dry friction clutch , experimental work , FE analysis , temperature distribution
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Air Conditioning Techniques Engineering Department, Al-Esraa University College, Baghdad, Iraq
Mechanical Engineering Department, College of Engineering, University of Baghdad, Baghdad, Iraq
Energy Engineering Department, College of Engineering, University of Baghdad, Baghdad, Iraq
Department of Mechanics, Al-Farabi Kazakh National University, Almaty, Kazakhstan
System Technologies and Engineering Design Methodology, Hamburg University of Technology, Hamburg, Germany
Air Conditioning Techniques Engineering Department
Mechanical Engineering Department
Energy Engineering Department
Department of Mechanics
System Technologies and Engineering Design Methodology
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