Intra-element versus inter-element crack propagation: the numerical extensometer approach
Intra-element versus inter-element crack propagation: the numerical extensometer approach
Authors
Amorim, David Leonardo Nascimento de Figueiredo
Picon, Ricardo
Vieira, Camila de Sousa
Florez Lopez, Julio
Picon, Ricardo
Vieira, Camila de Sousa
Florez Lopez, Julio
Profesor GuĆa
Authors
Date
Datos de publicaciĆ³n:
10.1007/s40430-024-04951-6
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING,Vol.46,2024
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING,Vol.46,2024
Tipo de recurso
Article
Keywords
Materia geogrƔfica
Collections
Abstract
Numerical modeling of crack propagation is still a pressing issue in fracture mechanics. The finite element method and its variations are usually used for this purpose. One of the possibilities for modeling crack propagation is the well-known cohesive fracture mechanics. Generally, commercial finite element programs use a predefined cohesive zone, i.e., inter-element cracking modeling. Alternatively, this paper proposes a numerical strategy where the cohesive cracks can nucleate and propagate at any finite element, i.e., intra-element cracking modeling. The numerical results show a good agreement between both models when the cohesive zone is predefined. Moreover, when compared to a bending experiment on a tunnel lining segment where cracks can appear anywhere, the proposed model (the intra-element cohesive cracking model) presents good accuracy where different cracks nucleate and propagate.