Multiple Engagement Wet Clutch Heat Transfer Model

Tatara, R. A.; Payvar, Parviz

doi:10.1080/10407780290059512

Cited by 28 publications

(13 citation statements)

References 5 publications

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“…In the literature, the heat transfer models are mostly based on the heat conduction equation posed in the two- or three-dimensional finite domain, using the finite element method or finite volume method. 1,2 These show good agreement with test results. However, the models normally need a lot of time to compute the finite domain when it has to consider the various operating conditions of the clutch.…”

Section: Introductionsupporting

confidence: 80%

“…The characteristic of the heat convection coefficient is changed according to three states: slipping, locking, and cooling. According to Tatara and Payvar, 2 the heat convection coefficient in the locking stage can be assumed to be the same at the last state in the slip stage. Thus, the experiments were conducted in the two modes, but not the locking stage.…”

Section: Heat Convection Coefficientmentioning

confidence: 99%

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Modeling of heat transfer for a wet multi-plate clutch based on empirical data

Kim

Shim

2017

Proceedings of the Institution of Mechanical Engineers, Part D:

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A heat transfer model of a wet multi-plate clutch based on empirical data is presented in this paper. Lumped system analysis was used to simplify the complex heat transfer system of the wet clutch. The model has included the effects of various design parameters of the wet clutch, such as rotating speed, flow rate and inlet temperature of the lubricant, clutch sizes, and groove types, by using the correlations of the heat convection coefficient. The correlations were obtained from 96 experiments that were designed to study the effects of the design parameters. The coefficients of the correlations were determined by the non-dominated sorting genetic algorithm (NSGA-II) to minimize errors between the simulated and the experimental results. The simulated results were compared with the experimental results to demonstrate the validity of the model and the correlations by using the percentage error, the root-mean-square error, and the correlation coefficient. The validation parameters were in good agreement with the experimental results.

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Section: Introductionsupporting

confidence: 80%

Section: Heat Convection Coefficientmentioning

confidence: 99%

Modeling of heat transfer for a wet multi-plate clutch based on empirical data

Kim

Shim

2017

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…With the increase of them, the rise rate and maximum of temperature both rise obviously. (7) With the decrease of the difference between dynamic and static friction coefficients, the rise rate and maximum of temperature significantly increase. T i m e ( s ) :…”

Section: Discussionmentioning

confidence: 99%

“…And the temperature rises predicted by the model were validated with the experimental data. Tatara and Payvar [7] developed a general thermal numerical model in two dimensions to simulate the heat transfer in a grooved wet clutch and characterized one cycle by three stages including an engagement period, a locked stage, and a cooling period. The finite difference technique was employed to solve the heat conduction equation.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Temperature Rise Mechanism and Some Controlling Factors of Wet Clutch Engagement

Zhang

Shi

Dong

2016

Mathematical Problems in Engineering

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The friction transmission model of wet clutch is established to analyze the friction transmission mechanism of its engagement. The model is developed by applying both the average flow model and the elastic contact model between the friction disk and separator plate. The key components during wet clutch engagement are the separator plate, friction disk, and lubricant. The one-dimension transient models of heat transfer in radial direction for the three components are built on the basis of the heat transfer theory and the conservation law of energy. The friction transmission model and transient heat transfer models are coupled and solved by using the Runge-Kutta numerical method, and the radial temperature distribution and their detailed parametric study for the three components are conducted separately. The simulation results show that the radial temperature for the three components rises with the increase of radius in engagement. The changes in engagement pressure, lubricant viscosity, friction lining permeability, combined surface roughness RMS, equivalent elasticity modulus, difference between dynamic and static friction coefficients, and lubricant flow have important influence on the temperature rise characteristics. The proposed models can get better understanding of the dynamic temperature rise characteristics of wet clutch engagement.

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“…Thermohydrodynamic (THD) simulations of clutch engagement reveal that the thermal behavior is closely related to the type of the grooves engraved into the friction liner, the material properties, and the energy level. 2,8,9 These factors are closely related to the material degradation rate. Progress in manufacturing methodologies has been reported to enhance the tribological performance and stability of the friction material.…”

Section: Introductionmentioning

confidence: 99%

Parametric analysis of wear factors of a wet clutch friction material with different groove patterns

Khonsari

McCarthy

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part J:

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The experimentally observed, two-stage wear in the wet clutch friction material is directly related to temperature and engagement load. To gain insight into the durability of the friction lining, an extensive parametric analysis of the factors is performed that takes into account different groove patterns (waffle shape, radial, and spiral), internal structure and material properties. The temperature field is predicted using a thermohydrodynamic analysis with the consideration of the asperity contact stress during the engagement process. The results should be useful to facilitate the industrial design of friction lining by avoiding costly wear test.

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Multiple Engagement Wet Clutch Heat Transfer Model

Cited by 28 publications

References 5 publications

Modeling of heat transfer for a wet multi-plate clutch based on empirical data

Modeling of heat transfer for a wet multi-plate clutch based on empirical data

Dynamic Temperature Rise Mechanism and Some Controlling Factors of Wet Clutch Engagement

Parametric analysis of wear factors of a wet clutch friction material with different groove patterns

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