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Research Papers: Hydrodynamic Lubrication

Investigation of Thermo-Elastic Behavior of Multidisk Clutches

[+] Author and Article Information
Oday I. Abdullah

System Technologies and
Engineering Design Methodology,
Hamburg University of Technology,
Denickestrasse 17 (Building L),
Hamburg 21073, Germany
e-mail: oday.abdullah@tuhh.de

Mumtaz Jamil Akhtar

System Technologies and
Engineering Design Methodology,
Hamburg University of Technology,
Denickestrasse 17 (Building L),
Hamburg 21073, Germany

Josef Schlattmann

System Technologies
and Engineering Design Methodology,
Hamburg University of Technology,
Denickestrasse 17 (Building L),
Hamburg 21073, Germany
e-mail: j.schlattmann@tuhh.de

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received April 14, 2014; final manuscript received August 28, 2014; published online October 6, 2014. Assoc. Editor: James R. Barber.

J. Tribol 137(1), 011703 (Oct 06, 2014) (9 pages) Paper No: TRIB-14-1082; doi: 10.1115/1.4028555 History: Received April 14, 2014; Revised August 28, 2014

The high thermal stresses generated in the contacting surfaces of a multidisk clutch system (pressure plate, clutch disks, plate separators and piston), due to the frictional heating generation during the slipping, is considered to be one of the main reasons lead to premature failure in the contacting surfaces of clutches. A finite element technique has been used to study the transient thermo-elastic phenomena of multidisk dry clutch. The effect of the sliding speed on the contact pressure distribution, the temperature field and the frictional heat generated along the frictional surfaces are investigated. Analysis has been completed using axisymmetric model to simulate the multidisk clutch system. Ansys software has been used to perform the numerical calculation in this paper.

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References

Figures

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Fig. 3

Sliding contact of two elastic bodies

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Fig. 2

The load conditions during the engagement cycle of the clutch

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Fig. 1

The main parts of multidisk clutch. (a) Multidisk clutch system [16] and (b) axisymmetric model for multidisk clutch system.

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Fig. 11

The variation of heat flux with disk radius (ωo = 150 rad/s, ts = 0.45 s)

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Fig. 12

The variation of heat flux with disk radius (ωo = 225 rad/s, ts = 0.45 s)

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Fig. 13

The variation of heat flux with disk radius (ωo = 300 rad/s, ts = 0.45 s)

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Fig. 9

The variation of contact pressure (MPa) with disk radius during the sliding period (f.s = 10, ωo = 150 rad/s)

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Fig. 4

The contact model with boundary conditions of multidisk clutch system

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Fig. 5

FE model of multidisk clutch system (no. of elements = 4428)

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Fig. 6

The variation of contact pressure distribution with disk radius (ωo = 150 rad/s, ts = 0.45 s)

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Fig. 7

The variation of contact pressure distribution with disk radius (ωo = 225 rad/s, ts = 0.45 s)

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Fig. 8

The variation of contact pressure distribution with disk radius (ωo = 300 rad/s, ts = 0.45 s)

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Fig. 10

The variation of the contact pressure (MPa) with disk radius during the sliding period (f.s = 10, ωo = 300 rad/s)

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Fig. 14

The variation of the heat flux (MW/m2) with disk radius during the sliding period (f.s = 10, ωo = 150 rad/s)

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Fig. 15

The variation of the heat flux (MW/m2) with disk radius during the sliding period (f.s = 10, ωo = 300 rad/s)

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Fig. 16

The history of the maximum temperature for different sliding speeds

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Fig. 17

The temperature distribution (K) of multidisk clutch (ωo = 300 rad/s, ts = 0.4 s)

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