Transient Behavior of Initial Perturbation in Multidisk Clutch System

Al-Shabibi, Abdullah M.

doi:10.1080/10402004.2014.945198

Cited by 12 publications

(6 citation statements)

References 18 publications

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“…This can be explained in that the lubricating oil carries off a large quantity of heat through convection. The highest temperatures occur at around t=0.5s, which are approximately 217 C  (Interface 2, the clutch engagement ends, the huge temperature gradients between the high-temperature regions and the low-temperature regions compel the heat to transfer to the latter; as a result, the 19 highest temperatures descend rapidly. Note that the highest temperature at r =0.113m decreases to be smaller than the second highest one at r =0.109m at about t=0.8s in Fig.…”

Section: Results Validation and Discussionmentioning

confidence: 98%

“…According to Eqs. (19) and (20), the variation of displacements depends on temperature distribution, and conversely the temperature distribution depends on the solution of displacements. Further, the contact pressure distribution is directly related to displacements.…”

Section: Contact Pressure Analysis Thermal Stress and Strainmentioning

confidence: 98%

“…Due to the difference in thermal conductivity between the friction lining and the separate plate, heat conduction to the friction disk is not equal to that of the separate plate (Al-Shabibi (19)). The heat partition factor is determined from the material physical properties as follows …”

Section: Heat Fluxmentioning

confidence: 98%

“…The constitutive equation of the thermoelastic problem in cylindrical-polar coordinates for an elastic solid under mechanical loading and thermal expansion can be expressed as (19) where   ζ is the stress vector, where the shear stress components in the circumferential direction are nonexistent due to the axisymmetry of the model,…”

Section: Contact Pressure Analysis Thermal Stress and Strainmentioning

confidence: 99%

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Pressure Distribution of a Multidisc Clutch Suffering Frictionally Induced Thermal Load

Yang

Ahmadian

et al. 2016

Tribology Transactions

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The transient thermal and thermoelastic analysis of an automotive multidisc clutch is performed to investigate the thermal deformation and the contact pressure distribution of the friction surfaces. An alternating finite volume method (FVM) and finite element method (FEM) for temperature distribution and contact pressure distribution, including the coupling between temperature, displacement and contact pressure, is employed in MATLAB. A penalty function method is used to impose the constraints on the contact boundary. The computational results indicate that the contact pressure distributions on the surfaces near the pressure plate are more uniform than those near the opposite plate, and the non-uniformity is enlarged with the temperature rise. The contact pressure and temperature distributions on the two friction surfaces of the separate plate are dissimilar and asymmetric, which is in good agreement with the test results. The results further show that the contact pressure peaks diminish and the non-contact regions reduce due to the heat conduction and convection when the engagement ends.

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Section: Results Validation and Discussionmentioning

confidence: 98%

Section: Contact Pressure Analysis Thermal Stress and Strainmentioning

confidence: 98%

Section: Heat Fluxmentioning

confidence: 98%

Section: Contact Pressure Analysis Thermal Stress and Strainmentioning

confidence: 99%

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Pressure Distribution of a Multidisc Clutch Suffering Frictionally Induced Thermal Load

Yang

Ahmadian

et al. 2016

Tribology Transactions

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“…Figure 1 illustrates the main parts of the dry clutch system (clutch disc, pressure plate, and flywheel) that are responsible to transfer the power from the driving part to the driven part. After studying the available literature that related to the numerical solutions of the thermal problem of dry friction clutches through the sliding/heating phase, it was found that the vast majority of researchers used two-dimensional numerical models (axisymmetric models) to simulate the thermal problem of the clutch system to obtain the thermal behaviour and performance during the thermal stage [1][2][3][4][5][6][7][8][9]. Meanwhile, there are a very limited number of studies that developed three-dimensional numerical models, where most of these models failed to represent all the complexities of the geometry of a frictional clutch and they were approximated models.…”

Section: Introductionmentioning

confidence: 99%

Analytical and Numerical Solutions for the Thermal Problem in a Friction Clutch System

Sabri¹,

Topczewska

Jweeg³

et al. 2021

Computation

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The dry friction clutch is an important part in vehicles, which has more than one function, but the most important function is to connect and disconnect the engine (driving part) with driven parts. This work presents a developed numerical solution applying a finite element technique in order to obtain results with high precision. A new three-dimensional model of a single-disc clutch operating in dry conditions was built from scratch. As the new model represents the real friction clutch including all details, the complexity in the geometry of the clutch is considered one of the difficulties that the researchers faced using the numerical solution. The thermal behaviour of the friction clutch during the slip phase was studied. Meanwhile, in the second part of this work, the transient thermal equations were derived from scratch to find the analytical solution for the thermal problem of a clutch disc in order to verify the numerical results. It was found, after comparison of the numerical results with analytical results, that the results of the numerical model are very accurate and the difference between them does not exceed 1%.

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Dynamic engagement characteristics of wet clutch based on hydro-mechanical continuously variable transmission

Zhao

Xiao

Bartoš

et al. 2021

J. Cent. South Univ.

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Transient Behavior of Initial Perturbation in Multidisk Clutch System

Cited by 12 publications

References 18 publications

Pressure Distribution of a Multidisc Clutch Suffering Frictionally Induced Thermal Load

Pressure Distribution of a Multidisc Clutch Suffering Frictionally Induced Thermal Load

Analytical and Numerical Solutions for the Thermal Problem in a Friction Clutch System

Dynamic engagement characteristics of wet clutch based on hydro-mechanical continuously variable transmission

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