Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/52670
Título: | Nonlinear Discrete Homogenized Model for Out-of-Plane Loaded Masonry Walls |
Autor(es): | Silva, Luis C. Lourenço, Paulo B. Milani, Gabriele |
Palavras-chave: | Masonry Out-of-plane Homogenization Nonlinear Discrete element model (DEM) Analysis and computation |
Data: | 2017 |
Editora: | American Society of Civil Engineers (ASCE) |
Revista: | Journal of Structural Engineering |
Resumo(s): | This paper presents a simple and reliable homogenization approach coupled with rigid elements and homogenized interfaces for the analysis of out-of-plane loaded masonry panels. The homogenization approach proposed is a coarse finite element discretization wherein bricks are meshed with a few elastic constant stress triangular elements and joints reduced to interfaces with elastoplastic softening behavior with friction, tension cutoff, and a cap in compression. Flexural behavior is deduced from membrane homogenized stress-strain relationships through thickness integration (Kirchhoff-Love plate hypothesis). The procedure is robust and allows obtaining homogenized bending moment/torque curvature relationships (also in presence of membrane pre-compression) to be used at a structural level within a rigid body and spring mass model (RBSM) implemented in a commercial code. The model relies on rigid quadrilateral elements interconnected by homogenized bending/torque nonlinear springs. The possibility of extending the procedure to a finite element package, with standard built-in solution procedures, allows for a robust reproduction of masonry out-of-plane behavior beyond the peak load, in the presence of global softening. The procedure is tested on a set of windowed and full masonry panels in two-way bending. Excellent agreement is found with both experimental data and previously presented numerical approaches. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/52670 |
DOI: | 10.1061/(ASCE)ST.1943-541X.0001831 |
ISSN: | 0733-9445 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | ISISE - Artigos em Revistas Internacionais |