Assessment of mesh dependency in the numerical simulation of compact tension tests for orthotropic materials
This paper presents a numerical study on the mesh dependency of the Hashin Damage Model for 2D finite element simulations of orthotropic materials. The main objective is to study and assess the efficiency of energy regularization in preventing mesh dependency in orthotropic damage models. Initially,...
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2020-08-01
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doaj-19b4175e09d94d9abc3c4d71f37476812021-05-04T07:33:36ZengElsevierComposites Part C: Open Access2666-68202020-08-011100006Assessment of mesh dependency in the numerical simulation of compact tension tests for orthotropic materialsB. Lopes0M.R.T. Arruda1L. Almeida-Fernandes2L. Castro3N. Silvestre4J.R. Correia5PhD Student, CERIS, Instituto Superior Técnico, Universidade de Lisboa, PortugalResearch Associate, CERIS, Instituto Superior Técnico, Universidade de Lisboa, Portugal; Corresponding author.PhD Student, CERIS, Instituto Superior Técnico, Universidade de Lisboa, PortugalAssociate Professor, CERIS, Instituto Superior Técnico, Universidade de Lisboa, PortugalFull Professor, IDMEC, Instituto Superior Técnico, Universidade de Lisboa, PortugalFull Professor, CERIS, Instituto Superior Técnico, Universidade de Lisboa, PortugalThis paper presents a numerical study on the mesh dependency of the Hashin Damage Model for 2D finite element simulations of orthotropic materials. The main objective is to study and assess the efficiency of energy regularization in preventing mesh dependency in orthotropic damage models. Initially, the thermodynamic laws used to validate a damage model are presented and applied to the specific Hashin damage model. An extensive parametric study is performed using various types of finite elements: with structured and squared-structured meshes; with linear and quadratic approximations; and with full and reduced integration schemes. To verify the mesh dependency, the results of a compact tension experimental test of glass fibre reinforced plastic (GFRP) material are compared to the numerical results; some conclusions are drawn regarding the force vs. displacement behaviour, with and without regular meshes.http://www.sciencedirect.com/science/article/pii/S2666682020300062Mesh dependencyDamage regularizationComposite damage localizationHashin modelOrthotropic material |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
B. Lopes M.R.T. Arruda L. Almeida-Fernandes L. Castro N. Silvestre J.R. Correia |
spellingShingle |
B. Lopes M.R.T. Arruda L. Almeida-Fernandes L. Castro N. Silvestre J.R. Correia Assessment of mesh dependency in the numerical simulation of compact tension tests for orthotropic materials Composites Part C: Open Access Mesh dependency Damage regularization Composite damage localization Hashin model Orthotropic material |
author_facet |
B. Lopes M.R.T. Arruda L. Almeida-Fernandes L. Castro N. Silvestre J.R. Correia |
author_sort |
B. Lopes |
title |
Assessment of mesh dependency in the numerical simulation of compact tension tests for orthotropic materials |
title_short |
Assessment of mesh dependency in the numerical simulation of compact tension tests for orthotropic materials |
title_full |
Assessment of mesh dependency in the numerical simulation of compact tension tests for orthotropic materials |
title_fullStr |
Assessment of mesh dependency in the numerical simulation of compact tension tests for orthotropic materials |
title_full_unstemmed |
Assessment of mesh dependency in the numerical simulation of compact tension tests for orthotropic materials |
title_sort |
assessment of mesh dependency in the numerical simulation of compact tension tests for orthotropic materials |
publisher |
Elsevier |
series |
Composites Part C: Open Access |
issn |
2666-6820 |
publishDate |
2020-08-01 |
description |
This paper presents a numerical study on the mesh dependency of the Hashin Damage Model for 2D finite element simulations of orthotropic materials. The main objective is to study and assess the efficiency of energy regularization in preventing mesh dependency in orthotropic damage models. Initially, the thermodynamic laws used to validate a damage model are presented and applied to the specific Hashin damage model. An extensive parametric study is performed using various types of finite elements: with structured and squared-structured meshes; with linear and quadratic approximations; and with full and reduced integration schemes. To verify the mesh dependency, the results of a compact tension experimental test of glass fibre reinforced plastic (GFRP) material are compared to the numerical results; some conclusions are drawn regarding the force vs. displacement behaviour, with and without regular meshes. |
topic |
Mesh dependency Damage regularization Composite damage localization Hashin model Orthotropic material |
url |
http://www.sciencedirect.com/science/article/pii/S2666682020300062 |
work_keys_str_mv |
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