In the present work, an enhanced formulation for cohesive interface that keep into account the effect of in-plane deformations of the gluing surface is proposed. Starting from this kinematical assumption an enriched formulation of interface finite element is proposed. The enriched formulation introduces also a constitutive correlation between the in-plane deformation (elongation or confinement) of the interface and the membrane state of stress. An interface damage model which accounts for the mode I and mode II and the axial deformation of the interface is proposed starting by the use of Drucker-Prager failure criterion. Simple numerical simulations are presented in order to illustrate the capabilities of the model. In particular, the effects of mortars joints in masonry substrate reinforced with FRP is investigated.
An interface damage model depending on the in-plane deformation
SACCO, Elio
2014-01-01
Abstract
In the present work, an enhanced formulation for cohesive interface that keep into account the effect of in-plane deformations of the gluing surface is proposed. Starting from this kinematical assumption an enriched formulation of interface finite element is proposed. The enriched formulation introduces also a constitutive correlation between the in-plane deformation (elongation or confinement) of the interface and the membrane state of stress. An interface damage model which accounts for the mode I and mode II and the axial deformation of the interface is proposed starting by the use of Drucker-Prager failure criterion. Simple numerical simulations are presented in order to illustrate the capabilities of the model. In particular, the effects of mortars joints in masonry substrate reinforced with FRP is investigated.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.