The Pressure Design of Wet Shift Clutch Based on Thermoelastic Instability Analysis

Article Preview

Abstract:

This paper investigated the dynamic pressure distribution on the plates within a wet shift clutch in hydrodynamic machineries for one engagement. The perturbation pressure model, heat conduction model and pressure calculation model excited by thermoealstic instability was developed. And wrote calculation programs with Maple 15 to analyze the influence of two kinds of typical friction materials, different thermal conductivity, different initial engagement speed on perturbation pressure amplitude and its impact on the pressure design margin and design radius. The results show that the margin can be decreased and design radius can be reduced, so power density increased. When the slipping speed is controlled within 16m /s, the radius can be reduced to about 1/2 of the original value.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

287-295

Citation:

Online since:

February 2013

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2013 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] Shuqin Du, Thermoelastic effects in automotive brakes, Ph.D. thesis, The University of Michigan, (1997).

Google Scholar

[2] Lee, K., and Barber, J. R., 1993, 'Frictionally Excited Thermoelastic Instability in Automotive Disk Brakes, ', ASME J. Tribol., 115, p.607–614.

DOI: 10.1115/1.2921683

Google Scholar

[3] Zagrodzki, P., 1990, 'Analysis of Thermomechanical Phenomena in Multi-Disk Clutches and Brakes, ', Wear, 140, p.291–308.

DOI: 10.1016/0043-1648(90)90091-n

Google Scholar

[4] Yi, Y. B., Barber, J. R., and Zagrdozki, P., 1999, 'Eigenvalue Solution of Thermoelastic Instability Problems Using Fourier Reduction, ', accepted by the Proc. R. Soc. London.

Google Scholar

[5] Decuzzi, P., Ciavarella, M., Monno, G., 2001. Frictionally excited thermoelastic instability in multi-disk clutches and brakes. ASME J. Tribol. 123, 865–871.

DOI: 10.1115/1.1352740

Google Scholar

[6] Anderson, A. E., and Knapp, R. A., 1990, 'Hot Spotting in Automotive Friction Systems, ', Wear, 138, p.319–337.

DOI: 10.1016/0043-1648(90)90034-8

Google Scholar

[7] Przemyslaw Zagrodzki, Samuel A. Truncone, Generation of hot spots in a wet multidisk clutch during short-term engagement, Wear 254(2003)474–491.

DOI: 10.1016/s0043-1648(03)00019-x

Google Scholar

[8] Barber, J. R., 1969, 'Thermoelastic Instability in the Sliding of Conforming Solids, ', Proc. R. Soc. London, Ser. A, 312, p.381–394.

Google Scholar

[9] Przemyslaw Zagrodzki , Thermoelastic instability in friction clutches and brakes -Transient modal analysis revealing mechanisms of excitation of unstable modes, International Journal of Solids and Structures 46 (2009) 2463–2476.

DOI: 10.1016/j.ijsolstr.2009.01.033

Google Scholar

[10] U. Pa. Volkov, A. Vladimir Paykov, translated by LIU Tai-lai. etc., Tracked vehicle design and calculation, Beijing Institute of Technology Press, February (1997).

Google Scholar

[11] Zhang Jin-le, Ma Biao, Zhang Ying-feng and LI He-yan, Study on the factors affecting temperature field and stress field of the wet shift clutch, Journal of Beijing Institute of Technology [J], 2010, Volume 30, No. 6.

Google Scholar

[12] Zhang Jin-le, Study on Control and Thermal analysis of Wet Dual Clutch Transmission Based on Armored Vehicle [D], Beijing: Beijing Institute of Technology, (2010).

Google Scholar