Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/21474
Título: | A simple homogenized model for the non-linear analysis of FRP strengthened masonry structures |
Autor(es): | Milani, G. Lourenço, Paulo B. |
Palavras-chave: | Masonry Fibre-reinforced polymer Non-linear model Homogenization Finite element method |
Data: | 2012 |
Editora: | Civil-Comp Press |
Revista: | Civil-Comp Proceedings |
Resumo(s): | A two-step model able to predict the non-linear response of FRP strengthened threedimensional masonry structures is presented. In the first step, non-strengthened masonry is substituted by a macroscopically equivalent homogeneous material through a kinematic model based on finite elements and working on a heterogeneous assemblage of blocks. Non-linearity is concentrated exclusively on joints reduced to interfaces, exhibiting a frictional behaviour with limited tensile and compressive strength with softening. The homogenized stress-strain behaviour evaluated at the meso-scale is then implemented at a structural level in a finite element non-linear code, relying on an assemblage of rigid infinitely resistant six-noded wedge elements and non-linear interfaces, with deterioration of the mechanical properties. FRP reinforcing strips are modelled through rigid triangles and non-linear interfaces between adjoining triangles. Delamination from the support is accounted for, by modelling FRP-masonry bond by means of non-linear softening triangular interfaces. Italian code CNR DT 200 0 formulas are used to evaluate peak interface tangential strength and post peak behaviour. A structural examples relying into a masonry deep beam is presented for validation purposes. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/21474 |
ISBN: | 9781905088546 |
ISSN: | 1759-3433 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | ISISE - Comunicações a Conferências Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
A Simple Homogenized Model for the Non-Linear Analysis of FRP Strengthened Masonry Structures.pdf | 1,05 MB | Adobe PDF | Ver/Abrir |