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Study about Transient Thermal Analysis for Transmission Disk Clutches at Engage ON/OFF
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English
Abstract
Torqflow transmission, which is composed of planetary gear mechanism, multiple disk clutches and a hydraulic control unit, has been adapted for Construction Machine because it allows an easy selection of speeds (forward or reverse). Recently a rubber facing material with high coefficient friction has been used disk clutch's facing parts for compact design. Meanwhile, it's heat conduction is inferior to metalic disk to be usually used, so at engage time temperature of rubber facing disk is higher than metalic and it's ablasive wear ratio, which is verified to have influence on facing temperature by experiments, is increased far more than before. Therefore prediction of facing temperature has been more important than before. Now, in this report, study on transient thermal analysis is introduced because it's accuracy has come to practical level.
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Citation
Sunayama, N., Iizuka, T., and Kato, Y., "Study about Transient Thermal Analysis for Transmission Disk Clutches at Engage ON/OFF," SAE Technical Paper 891783, 1989, https://doi.org/10.4271/891783.Also In
References
- Iizuka T. et al. “Analysis about Torqflow-Transmission of Planet Gearing Mechanism” Komatsu Technical Report 12 3 1966 7 23
- Fish R.L. Lloyd F.A. “Effect of Fluid Temperature on the Performance of Friction Material” SAE paper 750809
- Wise, W.R. Jr et al “Gylon Fluorocarbons: New High-Performance Friction Materials for High-Speed, Heavy-Duty Wet Clutches” SAE paper 720365
- Harada H. et al “Measuring System of Transsient Temperature Distribution on the Brake Disk Rotor” SAE paper 870256
- Fukano A. “An Analysis of the Transient Thermal Performance Automotive Disc Brakes” Nissan Technical Report, No.20, (S59-12) 45 56
- MSC/NASTRAN “Handbook for Thermal Analysis”
- Holman J.P. “Heat Transfer” Mac Gran-Hill 1978