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https://hdl.handle.net/1822/44909
Título: | Implementation and validation of a total displacement non-linear homogenization approach for in-plane loaded masonry |
Autor(es): | Bertolesi, E. Milani, G. Lourenço, Paulo B. |
Palavras-chave: | Masonry In-plane loads Semi-analytical approach Compatible model of homogenization Holonomic non-linear model |
Data: | 2016 |
Editora: | Elsevier 1 |
Revista: | Computers and Structures |
Citação: | Bertolesi, E., Milani, G., & Lourenco, P. B. (2016). Implementation and validation of a total displacement non-linear homogenization approach for in-plane loaded masonry. Computers & Structures, 176, 13-33. doi: 10.1016/j.compstruc.2016.08.001 |
Resumo(s): | Two simple homogenization models suitable for the non-linear analysis of masonry walls in-plane loaded are presented. A rectangular running bond elementary cell is discretized by means of twenty-four constant stress threenoded plane-stress triangular elements and linear two-noded interfaces. Non-linearity is concentrated on mortar reduced to interface, exhibiting a holonomic behavior with softening. The paper shows how the mechanical problem in the unit cell can be characterized by very few displacement/stress variables and how homogenized stress-strain behavior can be evaluated by means of a small-scale system of non-linear equations. At a structural level, it is therefore not necessary to solve a homogenization problem at each load step in each Gauss point and a direct implementation into commercial software as an external user supplied subroutine is straightforward. Nonlinear structural analyses are conducted on a variety of different problems, for which experimental and numerical data are available in the literature, in order to show that accurate results can be obtained with a limited computational effort. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/44909 |
DOI: | 10.1016/j.compstruc.2016.08.001 |
ISSN: | 0045-7949 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | ISISE - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Paper_Bertolesi.pdf | 2,59 MB | Adobe PDF | Ver/Abrir |