A coupled interface-body nonlocal damage model for the analysis of FRP strengthening detachment from cohesive material
Journal Title: Frattura ed Integrità Strutturale - Year 2011, Vol 5, Issue 18
Abstract
In the present work, a new model of the FRP-concrete or masonry interface, which accounts for the coupling occurring between the degradation of the cohesive material and the FRP detachment, is presented; in particular, a coupled interface-body nonlocal damage model is proposed. A nonlocal damage and plasticity model is developed for the quasi-brittle material. For the interface, a model which accounts for the mode I, mode II and mixed mode of damage and for the unilateral contact and friction effects is developed. Two different ways of performing the coupling between the body damage and the interface damage are proposed and compared. Some numerical applications are carried out in order to assess the performances of the proposed model in reproducing the mechanical behavior of the masonry elements strengthened with external FRP reinforcements.
Authors and Affiliations
Sonia Marfia, Elio Sacco, J. Toti
Keywords
Related Articles
- EP ID EP103014
- DOI 10.3221/IGF-ESIS.18.03
- Views 76
- Downloads 0
High temperature fatigue tests and crack growth in 40CrMoV13.9 notched components
The present paper addresses experimentally the high temperature fatigue of 40CrMoV13.9 steel and the effect of surface roughness on fatigue strength and crack initiation. The 40CrMoV13.9 steel is widely used in d...
Dependence of the mechanical fracture energy of the polymeric composite material from the mixture of filler fractions
This paper for the first time presents an equation for calculating the mechanical fracture energy of the polymeric composite material (PCM) with regard to the basic formulation parameters. By means of the develop...
Damage initiation in brittle and ductile materials as revealed from a fractoluminescence study
A set of heterogeneous and homogeneous materials differing in their brittle and ductile characteristics (granite, marble, silica ceramics, silicon carbide, organic glass) were subjected to impact damaging by a fa...
Il modello della fessura coesiva in trazione e compressione per la valutazione della duttilità degli elementi strutturali in calcestruzzo armato
Il problema della valutazione della duttilità degli elementi in calcestruzzo armato soggetti a flessione o presso-flessione è stato largamente studiato negli ultimi decenni, sia da un punto di vista sperimentale che anal...
Effective properties of a new auxetic triangular lattice:an analytical approach
In this article we propose a new auxetic periodic lattice with negative Poisson's ratio which tends tothe limit ν=-1 under particular conditions. We have studied its generation and kinematic, and we give a fulldesc...