Thermo-mechanical contact problems and elastic behaviour of single and double sides functionally graded brake disks with temperature-dependent material properties

Abstract A thermo-elastic contact problem of functionally graded materials (FGMs) rotating brake disk with different pure brake pad areas under temperature dependent material properties is solved by Finite Element Method (FEM). The properties of brake disk change gradually from metal to ceramic by p...

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Autores principales:	Mehdi Bayat, Ibrahim M. Alarifi, Ali Akbar Khalili, Tarek M. A. A. El-Bagory, Hoang Minh Nguyen, Amin Asadi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9118aec2673b4d708d5b12871b19c779
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spelling	oai:doaj.org-article:9118aec2673b4d708d5b12871b19c7792021-12-02T15:07:54ZThermo-mechanical contact problems and elastic behaviour of single and double sides functionally graded brake disks with temperature-dependent material properties10.1038/s41598-019-51450-z2045-2322https://doaj.org/article/9118aec2673b4d708d5b12871b19c7792019-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-51450-zhttps://doaj.org/toc/2045-2322Abstract A thermo-elastic contact problem of functionally graded materials (FGMs) rotating brake disk with different pure brake pad areas under temperature dependent material properties is solved by Finite Element Method (FEM). The properties of brake disk change gradually from metal to ceramic by power-law distribution along the radial direction from the inner to the outer surface. Areas of the pure pad are changing while the vertical force is constant. The ratio of brake pad thickness to FGMs brake disk thickness is assumed 0.66. Two sources of thermal loads are considered: (1) Heat generation between the pad and brake disk due to contact friction, and (2) External thermal load due to a constant temperature at inner and outer surfaces. Mechanical responses of FGMs disk are compared with several pad contact areas. The results for temperature-dependent and temperature-independent material properties are investigated and presented. The results show that the absolute value of the shear stress in temperature-dependent material can be greater than that for temperature-independent material. The radial stress for some specific grading index (n = 1.5) is compressive near the inner surface for double contact while it is tensile for a single contact. It is concluded that the radial strain for some specific value of grading index (n = 1) is lower than other FGMs and pure double side contact brake disks.Mehdi BayatIbrahim M. AlarifiAli Akbar KhaliliTarek M. A. A. El-BagoryHoang Minh NguyenAmin AsadiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-16 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mehdi Bayat Ibrahim M. Alarifi Ali Akbar Khalili Tarek M. A. A. El-Bagory Hoang Minh Nguyen Amin Asadi Thermo-mechanical contact problems and elastic behaviour of single and double sides functionally graded brake disks with temperature-dependent material properties
description	Abstract A thermo-elastic contact problem of functionally graded materials (FGMs) rotating brake disk with different pure brake pad areas under temperature dependent material properties is solved by Finite Element Method (FEM). The properties of brake disk change gradually from metal to ceramic by power-law distribution along the radial direction from the inner to the outer surface. Areas of the pure pad are changing while the vertical force is constant. The ratio of brake pad thickness to FGMs brake disk thickness is assumed 0.66. Two sources of thermal loads are considered: (1) Heat generation between the pad and brake disk due to contact friction, and (2) External thermal load due to a constant temperature at inner and outer surfaces. Mechanical responses of FGMs disk are compared with several pad contact areas. The results for temperature-dependent and temperature-independent material properties are investigated and presented. The results show that the absolute value of the shear stress in temperature-dependent material can be greater than that for temperature-independent material. The radial stress for some specific grading index (n = 1.5) is compressive near the inner surface for double contact while it is tensile for a single contact. It is concluded that the radial strain for some specific value of grading index (n = 1) is lower than other FGMs and pure double side contact brake disks.
format	article
author	Mehdi Bayat Ibrahim M. Alarifi Ali Akbar Khalili Tarek M. A. A. El-Bagory Hoang Minh Nguyen Amin Asadi
author_facet	Mehdi Bayat Ibrahim M. Alarifi Ali Akbar Khalili Tarek M. A. A. El-Bagory Hoang Minh Nguyen Amin Asadi
author_sort	Mehdi Bayat
title	Thermo-mechanical contact problems and elastic behaviour of single and double sides functionally graded brake disks with temperature-dependent material properties
title_short	Thermo-mechanical contact problems and elastic behaviour of single and double sides functionally graded brake disks with temperature-dependent material properties
title_full	Thermo-mechanical contact problems and elastic behaviour of single and double sides functionally graded brake disks with temperature-dependent material properties
title_fullStr	Thermo-mechanical contact problems and elastic behaviour of single and double sides functionally graded brake disks with temperature-dependent material properties
title_full_unstemmed	Thermo-mechanical contact problems and elastic behaviour of single and double sides functionally graded brake disks with temperature-dependent material properties
title_sort	thermo-mechanical contact problems and elastic behaviour of single and double sides functionally graded brake disks with temperature-dependent material properties
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/9118aec2673b4d708d5b12871b19c779
work_keys_str_mv	AT mehdibayat thermomechanicalcontactproblemsandelasticbehaviourofsingleanddoublesidesfunctionallygradedbrakediskswithtemperaturedependentmaterialproperties AT ibrahimmalarifi thermomechanicalcontactproblemsandelasticbehaviourofsingleanddoublesidesfunctionallygradedbrakediskswithtemperaturedependentmaterialproperties AT aliakbarkhalili thermomechanicalcontactproblemsandelasticbehaviourofsingleanddoublesidesfunctionallygradedbrakediskswithtemperaturedependentmaterialproperties AT tarekmaaelbagory thermomechanicalcontactproblemsandelasticbehaviourofsingleanddoublesidesfunctionallygradedbrakediskswithtemperaturedependentmaterialproperties AT hoangminhnguyen thermomechanicalcontactproblemsandelasticbehaviourofsingleanddoublesidesfunctionallygradedbrakediskswithtemperaturedependentmaterialproperties AT aminasadi thermomechanicalcontactproblemsandelasticbehaviourofsingleanddoublesidesfunctionallygradedbrakediskswithtemperaturedependentmaterialproperties
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Thermo-mechanical contact problems and elastic behaviour of single and double sides functionally graded brake disks with temperature-dependent material properties

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