Finite element simulation of spherical indentation experiments
Finite element simulation of spherical indentation experiments
The problem of indentation of ductile materials by ball indenters is, in this paper, addressed by numerical modelling. A finite element model is built using general purpose software. The axisymmetry of the problem is taken into account thus reducing its dimensionality. Particular attention is given to contact modelling as well as mesh design for optimal performance. The model is validated by comparing its predictions to the exact elastic solution as well as experimental measurements from elasto-plastic indentation tests. In the latter case, indenter imperfection is accounted for and material input are stress-strain curves originating from tensile tests. The sensitivity of numerical results to indenter elasticity is investigated. The effect of friction and specimen creep during indentation on load-displacement predictions is also assessed.
creep, elasto-plastic deformation, finite element modelling, friction, spherical indentation
Syngellakis, Stavros
1279f4e2-97ec-44dc-b4c2-28f5ac9c2f88
Habbab, H.
be9ccb6a-f26e-4b68-bad8-c2e29f9f867e
Mellor, Brian
2b13b80f-880b-49ac-82fe-827a15dde2fe
3 November 2017
Syngellakis, Stavros
1279f4e2-97ec-44dc-b4c2-28f5ac9c2f88
Habbab, H.
be9ccb6a-f26e-4b68-bad8-c2e29f9f867e
Mellor, Brian
2b13b80f-880b-49ac-82fe-827a15dde2fe
Syngellakis, Stavros, Habbab, H. and Mellor, Brian
(2017)
Finite element simulation of spherical indentation experiments.
International Journal of Computational Methods and Experimental Measurements, 6 (4).
(doi:10.2495/CMEM-V6-N4-749-763).
Abstract
The problem of indentation of ductile materials by ball indenters is, in this paper, addressed by numerical modelling. A finite element model is built using general purpose software. The axisymmetry of the problem is taken into account thus reducing its dimensionality. Particular attention is given to contact modelling as well as mesh design for optimal performance. The model is validated by comparing its predictions to the exact elastic solution as well as experimental measurements from elasto-plastic indentation tests. In the latter case, indenter imperfection is accounted for and material input are stress-strain curves originating from tensile tests. The sensitivity of numerical results to indenter elasticity is investigated. The effect of friction and specimen creep during indentation on load-displacement predictions is also assessed.
Text
Syngellakis etal_2018 CMEM060412f
- Accepted Manuscript
More information
Accepted/In Press date: 19 June 2017
Published date: 3 November 2017
Keywords:
creep, elasto-plastic deformation, finite element modelling, friction, spherical indentation
Identifiers
Local EPrints ID: 416083
URI: http://eprints.soton.ac.uk/id/eprint/416083
ISSN: 2046-0546
PURE UUID: 853454a7-c671-401c-b3ac-f675812cdc4f
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Date deposited: 01 Dec 2017 17:30
Last modified: 18 Jul 2022 16:43
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Contributors
Author:
Stavros Syngellakis
Author:
H. Habbab
Author:
Brian Mellor
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