The temperatures distributions of a single-disc clutches using heat partitioning and total heat generated approaches

Abdullah, Oday I.; Schlattmann, Josef; Majeed, Mahir H.; Sabri, Laith Abed

doi:10.1016/j.csite.2017.12.003

Cited by 33 publications

(14 citation statements)

References 20 publications

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“…During operational conditions, the range of temperature rises to 300–500 °C [ 29 ] at certain contact points on the facing. On the other hand, considering the whole facing, the friction facing is heated to approximately 200 °C.…”

Section: Results and Evaluationmentioning

confidence: 99%

Micromechanical Model and Thermal Properties of Dry-Friction Hybrid Polymer Composite Clutch Facings

2020

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Fiber-reinforced hybrid composites are the most commonly used dry-friction materials in the automotive industry. On the other hand, the great variety of components utilized these days in such material systems often requires identification investigations for a complex characterization. The development history of clutch materials was reviewed, highlighting and understanding the milestones and efforts leading to the creation of these materials. Investigations were performed to determine mechanical stiffness matrix parameters and thermal properties of a woven fiber yarn (glass fiber with aromatic polyamide, copper, and poly-acrylic-nitrile (PAN) reinforced friction material, revealing and solving challenges faced during identification efforts. This study grants an effective reference and a novel guidance for material identification methods for similar complex materials, and the results provide input parameters for thermomechanical simulation contact model development, which will cover friction material lifetime effects on dry clutch tribology in a future study.

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Section: Results and Evaluationmentioning

confidence: 99%

Micromechanical Model and Thermal Properties of Dry-Friction Hybrid Polymer Composite Clutch Facings

2020

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“…The thermal analysis conduction by means of the finite element method was compared with results that were obtained from the one-dimensional analytical model. In order The main development in this analysis is to extend the numerical solution from 2D axisymmetric problem [1,11,20,27,28] to 3D solution that included all the complexities of the friction clutch system. The new solution can be applied for more complex problems that occur in the clutch system such as hotspot, wear, flash temperature, the effect of roughness, etc.…”

Section: Analytical Modelmentioning

confidence: 99%

“…One of these hypotheses is assuming that the variation in temperature is in one dimension only and neglecting many other important factors such as convection, surface roughness, distribution of contact pressure, etc. [10][11][12][13][14][15][16][17][18][19][20][21]. The purpose of all these hypotheses is to obtain an analytical solution by avoiding the solutions for 2D or 3D 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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“…In the first period, an axial force is applied to a pressure plate to produce sufficient compression to trigger the initial engagement. A significant disadvantage of this stage is the high amount of friction heat generation due to the sliding between rubbing surfaces [1]. This period is called the heating period (slipping phase), this is also the phase characterized by the highest values of thermal stresses and interface temperature.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Finite Element Analysis of Contact Problem in Dry Friction Clutches

et al. 2021

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We present an investigation through numerical analysis (FEM) of the solution of the contact problem in friction clutch systems during engagement manoeuver. The case of high contact pressure between the sliding elements of a clutch system (flywheel, friction clutch and pressure plate) has been also considered. A finite element model of a dry friction clutch system (single disc) to estimate the distributions of the contact pressure between the contact elements of the clutch system under different working conditions has been developed and the main findings are discussed. Furthermore, the effect of modules of elasticity (contact stiffness) on the distribution of contact pressure of the mating surfaces was investigated. Also, the results encompass the deformations of the contacting surfaces for different cases. This work could provide a fundamental intermediate step to obtain a partial solution to the thermos-elastic problem in order to compute the thermal-driven deformations and stresses in the automotive clutches and brakes under different working conditions.

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The temperatures distributions of a single-disc clutches using heat partitioning and total heat generated approaches

Cited by 33 publications

References 20 publications

Micromechanical Model and Thermal Properties of Dry-Friction Hybrid Polymer Composite Clutch Facings

Micromechanical Model and Thermal Properties of Dry-Friction Hybrid Polymer Composite Clutch Facings

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

Three-Dimensional Finite Element Analysis of Contact Problem in Dry Friction Clutches

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