In this paper, a novel adaptive multiscale model is proposed for accurately predicting the nonlinearmechanical response of periodic brick masonry due to crack initiation and propagation under general inplaneloading histories. Such a model relies on a two-level domain decomposition technique, used inconjunction with an adaptive strategy able to automatically zoom-in the zones incipiently affected bydamage localization, with the aim of reducing the typically high computational effort associated withfully microscopic models. The proposed switching criterion is based on the numerical determination ofmicroscopically informed first failure surfaces taking into account higher-order deformation effects. Inorder to assess the validity of the proposed strategy, a sensitivity analysis is carried out on a shear wallsample by varying the required input numerical parameters. An additional application of the proposedmultiscale model is then presented for investigating the role of the fiber content in fiber-reinforcedmortars (FRMs), recently introduced for masonry construction and rehabilitation, on the overallresponse of a deep beam sample.
Scheda prodotto non validato
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo
|Titolo:||Multiscale failure analysis of periodic masonry structures with traditional and fiber-reinforced mortar joints|
|Data di pubblicazione:||2017|
|Appare nelle tipologie:||1.1 Articolo in rivista|