Comparison between RVE and full mesh approaches for the simulation of compression tests on cellular metals
Metal foams are materials of recent development and application that show interesting combinations of physical and mechanical properties. Many applications are envisaged for such materials, particularly in equipments of passive safety, because of their high capacity of energy absorption under impact...
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| Format: | Article |
| Language: | en |
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Wiley-Vch
2008
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| Online Access: | http://eprints.utm.my/6531/1/OliveiraBF2008_ComparisonBetween%20RVEandFullMeshApproaches.pdf http://eprints.utm.my/6531/ http://dx.doi.org/10.1002/mawe.200700263 |
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| author | Oliveira, B. F. Cunda, L. A. B. Ochsner, Andreas Creus, G. J. |
| author_facet | Oliveira, B. F. Cunda, L. A. B. Ochsner, Andreas Creus, G. J. |
| author_sort | Oliveira, B. F. |
| building | UTM Library |
| collection | Institutional Repository |
| content_provider | Universiti Teknologi Malaysia |
| content_source | UTM Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | Metal foams are materials of recent development and application that show interesting combinations of physical and mechanical properties. Many applications are envisaged for such materials, particularly in equipments of passive safety, because of their high capacity of energy absorption under impact conditions. The damage analysis in metallic foams is a complex problem and must be performed in a finite strain context. Considering that compression is the dominant loading in impact situations, a finite deformation simulation including damage effects of a compression test on a cellular metal sample is shown in this work. The main objective of the paper is to compare simulations considering periodic boundary conditions, by means of a representative volume element (RVE) approach, with results obtained using full meshes. It is shown that, when the imposed deformation is high, the use of RVE does not describe in a proper manner the deformation that occurs at the walls of cells. This characteristic of RVE approach results in a too stiff behavior when considering load-displacement relations. A comparison with experimental results is also presented. |
| format | Article |
| id | my.utm.eprints-6531 |
| institution | Universiti Teknologi Malaysia |
| language | en |
| publishDate | 2008 |
| publisher | Wiley-Vch |
| record_format | eprints |
| spelling | my.utm.eprints-65312017-03-01T08:36:36Z http://eprints.utm.my/6531/ Comparison between RVE and full mesh approaches for the simulation of compression tests on cellular metals Oliveira, B. F. Cunda, L. A. B. Ochsner, Andreas Creus, G. J. TJ Mechanical engineering and machinery Metal foams are materials of recent development and application that show interesting combinations of physical and mechanical properties. Many applications are envisaged for such materials, particularly in equipments of passive safety, because of their high capacity of energy absorption under impact conditions. The damage analysis in metallic foams is a complex problem and must be performed in a finite strain context. Considering that compression is the dominant loading in impact situations, a finite deformation simulation including damage effects of a compression test on a cellular metal sample is shown in this work. The main objective of the paper is to compare simulations considering periodic boundary conditions, by means of a representative volume element (RVE) approach, with results obtained using full meshes. It is shown that, when the imposed deformation is high, the use of RVE does not describe in a proper manner the deformation that occurs at the walls of cells. This characteristic of RVE approach results in a too stiff behavior when considering load-displacement relations. A comparison with experimental results is also presented. Wiley-Vch 2008-02 Article PeerReviewed application/pdf en http://eprints.utm.my/6531/1/OliveiraBF2008_ComparisonBetween%20RVEandFullMeshApproaches.pdf Oliveira, B. F. and Cunda, L. A. B. and Ochsner, Andreas and Creus, G. J. (2008) Comparison between RVE and full mesh approaches for the simulation of compression tests on cellular metals. Materials Science and Engineering Technology, 39 (2). pp. 133-142. ISSN 0933-5137 http://dx.doi.org/10.1002/mawe.200700263 10.1002/mawe.200700263 |
| spellingShingle | TJ Mechanical engineering and machinery Oliveira, B. F. Cunda, L. A. B. Ochsner, Andreas Creus, G. J. Comparison between RVE and full mesh approaches for the simulation of compression tests on cellular metals |
| title | Comparison between RVE and full mesh approaches for the simulation of compression tests on cellular metals |
| title_full | Comparison between RVE and full mesh approaches for the simulation of compression tests on cellular metals |
| title_fullStr | Comparison between RVE and full mesh approaches for the simulation of compression tests on cellular metals |
| title_full_unstemmed | Comparison between RVE and full mesh approaches for the simulation of compression tests on cellular metals |
| title_short | Comparison between RVE and full mesh approaches for the simulation of compression tests on cellular metals |
| title_sort | comparison between rve and full mesh approaches for the simulation of compression tests on cellular metals |
| topic | TJ Mechanical engineering and machinery |
| url | http://eprints.utm.my/6531/1/OliveiraBF2008_ComparisonBetween%20RVEandFullMeshApproaches.pdf http://eprints.utm.my/6531/ http://dx.doi.org/10.1002/mawe.200700263 |
| url_provider | http://eprints.utm.my/ |