Simulation of the engagement of carbon fabric wet clutch: Analytical and experimental comparison

Li, Wenbin; Huang, Jianfeng; Fei, Jie; Cao, Liyun; Chen, Yao; Wang, Wenjing

doi:10.1016/j.triboint.2015.05.018

Cited by 22 publications

(10 citation statements)

References 30 publications

(39 reference statements)

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“…The modified Reynolds equation is simplified into the following function based on some assumptions. 6,12 …”

Section: Theory and Model Developmentmentioning

confidence: 99%

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Numerical and experimental research on engagement process of wet multi-plate friction clutches with groove consideration

Zhou

2019

Proceedings of the Institution of Mechanical Engineers, Part J:

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A numerical model is established to investigate the effects of the influencing factors such as design parameters and operating conditions on the performance and behavior of the engagement process of the wet clutch based on the Navier–Stokes equations, contact mechanics, and heat transfer theory. A finite element contact model called KE contact model is used to analyze the rough contact during engagement process and thermal effect on the viscosity is considered based on heat transfer theory. The integration of the grooving into the simulation and the method of coupled finite element by domain decomposition of groove and ungrooved areas are put forward to facilitate the analysis. The experimental results agree well with the numerical model which takes the normal pressure, the temperature of ATF, relative revolution speed, the permeability and the groove geometry into account. The results of numerical simulation and the experiment indicate that the applied pressure not only affects the engagement time, but also has influence on the value of the engagement torque. Besides, the engagement time is roughly proportional to the relative revolution speed. The influencing factors such as the temperature of ATF, the permeability, grooves, the torque judders and effects of PID control parameters are also discussed in the paper. The performance and behavior of the engagement of the wet clutch were studied by two methods of numerical calculation and experimental research, which make the working process of the wet clutch more detailed.

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“…The modified Reynolds equation is simplified into the following function based on some assumptions. 6,12 …”

Section: Theory and Model Developmentmentioning

confidence: 99%

“…Changing the expression of equation (7). Then the variation of film thickness 6,12 with time is obtained as follows …”

Section: Theory and Model Developmentmentioning

confidence: 99%

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Numerical and experimental research on engagement process of wet multi-plate friction clutches with groove consideration

Zhou

2019

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…. Li Wenbin [6] worked on simulation of engagement carbon fabric wet clutch by analytical & experimental method. The modified numerical model was developed for a carbon fabric wet clutch by taking the influences of the applied pressure, the permeability and the fluid viscosity on the engagement characteristics.…”

Section: Literaturementioning

confidence: 99%

Finite Element Analysis of Friction Plate of Diaphragm Spring Clutch for TD-3250 Vehicle

2016

IJSR

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This paper presents finite element analysis of grooved friction plate of Diaphragm spring Clutch which has been used to study of temperature distribution & thermal stresses during single engagement. The commercial software CATIA V.5 & ANSYS 15 is used for modelling of clutch parts & Thermo-mechanical analysis of friction plate respectively. When clutch begins to engage, the high thermal stresses & high temperature distribution generated between the contacting surfaces such as pressure plate, clutch disc and flywheel due to the frictional heating which is generated in 1.85 sec slip-time. The thermo-mechanical problems such as thermal deformations and thermo-elastic instability due to hot spot leads to thermal cracking, this is the main reason of clutch failure which is occurred in previous design of TD 3250 vehicle clutch system, hence there is need to do thermo-mechanical analysis of clutch component. The main objective of this paper is to obtain a minimum safe stress value & temperature distribution of friction plate by using analytical & numerical calculation.

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“…An integrated clutch filling phase control for gearshifts on wet clutch transmissions for heavy-duty vehicles was developed by Meng et al [5,6], and the clutch actuator was optimally designed with certain constraints. Wenbin et al [7,8] focused on the study of a carbon fabric wet clutch, which is different with traditional materials. The tribological properties were investigated by a carbon fabric wet clutch model established by the modified Reynolds equation and a torque balance equation, and this model was verified by experimental measurements.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Buckling Induced Thermoelastic Instability in Frictional Clutches

Li¹,

Li²,

Ma³

et al. 2017

Proceedings of the 4th International Conference of Fluid Flow, Heat and Mass Transfer (FFHMT'17)

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-A multi-disc clutch test bench was set up and sliding experiments were conducted to investigate the relationship between the friction glazed spot distribution and mechanical torsion buckling on frictional components. The buckling deformation model of a separator disc with spline teeth subjected to mechanical torsion is established to compare with the experimental observation. The buckled spline disc provides a certain perturbation frequency during the sliding period. Under this sliding condition, when the relative sliding rubbing speed in frictional clutches exceeds the thermoelastic instability (TEI) speed predicted by Barber and Lee's TEI model, mechanical buckling induces thermoelastic instability (MBTEI). The dangerous sliding speed and perturbation pressure growth rate are obtained in regard to structural parameters, temperatures, abrasion cracks and torques.

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Simulation of the engagement of carbon fabric wet clutch: Analytical and experimental comparison

Cited by 22 publications

References 30 publications

Numerical and experimental research on engagement process of wet multi-plate friction clutches with groove consideration

Numerical and experimental research on engagement process of wet multi-plate friction clutches with groove consideration

Finite Element Analysis of Friction Plate of Diaphragm Spring Clutch for TD-3250 Vehicle

Mechanical Buckling Induced Thermoelastic Instability in Frictional Clutches

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