INTEC   05402
INSTITUTO DE DESARROLLO TECNOLOGICO PARA LA INDUSTRIA QUIMICA
Unidad Ejecutora - UE
artículos
Título:
On the fracture models determined by the continuum-strong discontinuity approach
Autor/es:
A.E HUESPE, J. OLIVER, M.D.G. PULIDO, S. BLANCO, D.L. LINERO
Revista:
INTERNATIONAL JOURNAL OF FRACTURE
Referencias:
Año: 2006 vol. 137 p. 211 - 229
ISSN:
0376-9429
Resumen:
The paper focuses on the Continuum Strong Discontinuity Approach (CSDA) to fracture mechanics, and the traction-separation cohesive laws induced from continuum dissipative models as their projections onto the failure interface. They are compared with the cohesive laws commonly used for the fracture simulation in quasi-brittle materials, typically concrete. Emphasis is placed in the analysis of the mechanical stress-strain states induced by the CSDA into the fracture process zone: first when the damage mechanism is initiated and, after, when the cohesive model determines the crack response. The influence of the material parameters, particularly the fracture energy and the initial continuum softening modulus, in the obtained phenomenological responses is also analyzed. Representative numerical solutions of fracture problems are finally presented.