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    Item type:Publication, Access status: with files ,
    Analytical and numerical solutions for the thermal problem in a friction clutch system
    (Multidisciplinary Digital Publishing Institute (MDPI), 2021-11-15)
    Sabri, Laith Abed
    ;
    Topczewska, Katarzyna
    ;
    Jweeg, Muhsin Jaber
    ;
    Abdullah, Oday Ibraheem
    ;
    Abed, Azher M.
    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%.
    Publicationtype: Journal Article
    Scopus© Citations 3  101  245
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    Item type:Publication, Access status: with files ,
    Temperature and thermal stresses distributions in a dry friction clutch
    (PTMTS, 2020)
    Topczewska, Katarzyna
    ;
    Schlattmann, Josef
    ;
    Abdullah, Oday Ibraheem
    The aim of this study is to develop an analytical model to determine temperature and thermal stresses distributions in a single plate clutch during the slipping phase. Proposed expressions enable calculation of temperature and thermal stresses on the contact surface as well as at any depth inside the friction material and at any instant during the slipping period. It was investigated how the maximum temperature on the friction surface varies with the thickness of the friction facings of the clutch disc and the intensity of convective cooling.
    Publicationtype: Journal Article
    Scopus© Citations 11  236  283