HOMOGENIZATION OF UNREINFORCED OLD MASONRY WALL COMPARISON OF SCALAR ISOTROPIC AND ORTHOTROPIC DAMAGE MODELS
Masonry is a heterogeneous composite material made of bricks bonded by a mortar matrix. Modeling such a material on macroscale typically calls for homogenization adopting a suitable constitutive model capable of capturing its quasi-brittle behavior. The present contribution concentrates on compariso...
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Czech Technical University in Prague
2020-03-01
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| Series: | Acta Polytechnica CTU Proceedings |
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| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/6369 |
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| author | Vasco Bernardo Tomáš Krejčí Tomáš Koudelka Michal Šejnoha |
| author_facet | Vasco Bernardo Tomáš Krejčí Tomáš Koudelka Michal Šejnoha |
| author_sort | Vasco Bernardo |
| collection | DOAJ |
| description | Masonry is a heterogeneous composite material made of bricks bonded by a mortar matrix. Modeling such a material on macroscale typically calls for homogenization adopting a suitable constitutive model capable of capturing its quasi-brittle behavior. The present contribution concentrates on comparison and potential application of classical isotropic and orthotropic damage models in the framework of strain based first order numerical homogenization. As an illustrative example, a representative volume element in terms of a periodic unit cell is constructed to address the response of an unreinforced masonry (URM) structure typical of “Placa” buildings (mixed masonry-reinforced concrete buildings) built in Portugal. The performance of the two models is examined on the basis of macroscopic stress-strain curves constructed for both tensile and compressive loading. The selected geometrical constraints clearly identify the differences in the predictive capabilities of the two models. |
| format | Article |
| id | doaj-art-13b5e6ee2c7e41f09d06a83fcb439955 |
| institution | DOAJ |
| issn | 2336-5382 |
| language | English |
| publishDate | 2020-03-01 |
| publisher | Czech Technical University in Prague |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj-art-13b5e6ee2c7e41f09d06a83fcb4399552025-08-20T02:42:01ZengCzech Technical University in PragueActa Polytechnica CTU Proceedings2336-53822020-03-012601610.14311/APP.2020.26.00014987HOMOGENIZATION OF UNREINFORCED OLD MASONRY WALL COMPARISON OF SCALAR ISOTROPIC AND ORTHOTROPIC DAMAGE MODELSVasco Bernardo0Tomáš Krejčí1Tomáš Koudelka2Michal Šejnoha3Czech Technical University in Prague, Faculty of Civil Engineering, Department of Mechanics, Thákurova 7, 166 29 Prague 6, Czech RepublicCzech Technical University in Prague, Faculty of Civil Engineering, Department of Mechanics, Thákurova 7, 166 29 Prague 6, Czech RepublicCzech Technical University in Prague, Faculty of Civil Engineering, Department of Mechanics, Thákurova 7, 166 29 Prague 6, Czech RepublicCzech Technical University in Prague, Faculty of Civil Engineering, Department of Mechanics, Thákurova 7, 166 29 Prague 6, Czech RepublicMasonry is a heterogeneous composite material made of bricks bonded by a mortar matrix. Modeling such a material on macroscale typically calls for homogenization adopting a suitable constitutive model capable of capturing its quasi-brittle behavior. The present contribution concentrates on comparison and potential application of classical isotropic and orthotropic damage models in the framework of strain based first order numerical homogenization. As an illustrative example, a representative volume element in terms of a periodic unit cell is constructed to address the response of an unreinforced masonry (URM) structure typical of “Placa” buildings (mixed masonry-reinforced concrete buildings) built in Portugal. The performance of the two models is examined on the basis of macroscopic stress-strain curves constructed for both tensile and compressive loading. The selected geometrical constraints clearly identify the differences in the predictive capabilities of the two models.https://ojs.cvut.cz/ojs/index.php/APP/article/view/6369homogenization of unreinforced masonry wall, periodic unit cell, scalar isotropic damage model, orthotropic damage model, “placa” buildings |
| spellingShingle | Vasco Bernardo Tomáš Krejčí Tomáš Koudelka Michal Šejnoha HOMOGENIZATION OF UNREINFORCED OLD MASONRY WALL COMPARISON OF SCALAR ISOTROPIC AND ORTHOTROPIC DAMAGE MODELS Acta Polytechnica CTU Proceedings homogenization of unreinforced masonry wall, periodic unit cell, scalar isotropic damage model, orthotropic damage model, “placa” buildings |
| title | HOMOGENIZATION OF UNREINFORCED OLD MASONRY WALL COMPARISON OF SCALAR ISOTROPIC AND ORTHOTROPIC DAMAGE MODELS |
| title_full | HOMOGENIZATION OF UNREINFORCED OLD MASONRY WALL COMPARISON OF SCALAR ISOTROPIC AND ORTHOTROPIC DAMAGE MODELS |
| title_fullStr | HOMOGENIZATION OF UNREINFORCED OLD MASONRY WALL COMPARISON OF SCALAR ISOTROPIC AND ORTHOTROPIC DAMAGE MODELS |
| title_full_unstemmed | HOMOGENIZATION OF UNREINFORCED OLD MASONRY WALL COMPARISON OF SCALAR ISOTROPIC AND ORTHOTROPIC DAMAGE MODELS |
| title_short | HOMOGENIZATION OF UNREINFORCED OLD MASONRY WALL COMPARISON OF SCALAR ISOTROPIC AND ORTHOTROPIC DAMAGE MODELS |
| title_sort | homogenization of unreinforced old masonry wall comparison of scalar isotropic and orthotropic damage models |
| topic | homogenization of unreinforced masonry wall, periodic unit cell, scalar isotropic damage model, orthotropic damage model, “placa” buildings |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/6369 |
| work_keys_str_mv | AT vascobernardo homogenizationofunreinforcedoldmasonrywallcomparisonofscalarisotropicandorthotropicdamagemodels AT tomaskrejci homogenizationofunreinforcedoldmasonrywallcomparisonofscalarisotropicandorthotropicdamagemodels AT tomaskoudelka homogenizationofunreinforcedoldmasonrywallcomparisonofscalarisotropicandorthotropicdamagemodels AT michalsejnoha homogenizationofunreinforcedoldmasonrywallcomparisonofscalarisotropicandorthotropicdamagemodels |