Validation of normal and frictional contact models of spherical bodies by FEM analysis

Validation of normal and frictional contact models of spherical bodies by FEM analysis

Contact forces between two spheres are computed, including the contact pressure (normal) and the frictional stress (tangential) using a finite element method (FEM). A CAD model of a part of a sphere was developed. A mesh was created using ANSYS® Solid 186, 20-Noded hexahedral element and analyzed fo...

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Main Authors: H Khawaja, K Parvez
Format: Article
Language:English
Published: Multi-Science Publishing 2016-09-01
Series:International Journal of Multiphysics
Online Access:http://journal.multiphysics.org/index.php/IJM/article/view/146
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spelling doaj-bee22ce2d35040f8ab831ef87dba58c72020-11-24T23:02:47ZengMulti-Science PublishingInternational Journal of Multiphysics1750-95482048-39612016-09-014210.1260/1750-9548.4.2.175158Validation of normal and frictional contact models of spherical bodies by FEM analysisH Khawaja0K Parvez1PhD Student, Department of Engineering, University of Cambridge, UKProfessor, Research Centre for Modeling and Simulation, National University of Sciences and Technology, PakistanContact forces between two spheres are computed, including the contact pressure (normal) and the frictional stress (tangential) using a finite element method (FEM). A CAD model of a part of a sphere was developed. A mesh was created using ANSYS® Solid 186, 20-Noded hexahedral element and analyzed for its sensitivity. ANSYS® Contact 174 and Target 170, 8-Noded surface elements were used. Contact pressure and frictional stress contours were calculated by varying the displacements. Normal and Tangential contact forces were computed by integrating contact pressure and frictional stress over the contact surface. The values obtained for the normal force were compared with the non-linear spring model as given by Hertz [1]. Similarly values of the tangential force were compared with the model of Mindlin and Deresiewicz (MD) [2]. The FEM results were found to be in agreement with the models.http://journal.multiphysics.org/index.php/IJM/article/view/146
collection DOAJ
language English
format Article
sources DOAJ
author H Khawaja
K Parvez
spellingShingle H Khawaja
K Parvez
Validation of normal and frictional contact models of spherical bodies by FEM analysis
International Journal of Multiphysics
author_facet H Khawaja
K Parvez
author_sort H Khawaja
title Validation of normal and frictional contact models of spherical bodies by FEM analysis
title_short Validation of normal and frictional contact models of spherical bodies by FEM analysis
title_full Validation of normal and frictional contact models of spherical bodies by FEM analysis
title_fullStr Validation of normal and frictional contact models of spherical bodies by FEM analysis
title_full_unstemmed Validation of normal and frictional contact models of spherical bodies by FEM analysis
title_sort validation of normal and frictional contact models of spherical bodies by fem analysis
publisher Multi-Science Publishing
series International Journal of Multiphysics
issn 1750-9548
2048-3961
publishDate 2016-09-01
description Contact forces between two spheres are computed, including the contact pressure (normal) and the frictional stress (tangential) using a finite element method (FEM). A CAD model of a part of a sphere was developed. A mesh was created using ANSYS® Solid 186, 20-Noded hexahedral element and analyzed for its sensitivity. ANSYS® Contact 174 and Target 170, 8-Noded surface elements were used. Contact pressure and frictional stress contours were calculated by varying the displacements. Normal and Tangential contact forces were computed by integrating contact pressure and frictional stress over the contact surface. The values obtained for the normal force were compared with the non-linear spring model as given by Hertz [1]. Similarly values of the tangential force were compared with the model of Mindlin and Deresiewicz (MD) [2]. The FEM results were found to be in agreement with the models.
url http://journal.multiphysics.org/index.php/IJM/article/view/146
work_keys_str_mv AT hkhawaja validationofnormalandfrictionalcontactmodelsofsphericalbodiesbyfemanalysis
AT kparvez validationofnormalandfrictionalcontactmodelsofsphericalbodiesbyfemanalysis
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