Title:
Numerical Study of the Effect of Inhomogeneities and Boundary Conditions on the Tensile Strength of Concrete
Author(s):
Denys Breysse
Publication:
Materials Journal
Volume:
88
Issue:
5
Appears on pages(s):
489-498
Keywords:
boundaries; concretes; damage; heterogeneity; numerical analysis; position (location); probability theory; stress-strain diagram; tensile strength; tension tests; Materials Research
DOI:
10.14359/2142
Date:
9/1/1991
Abstract:
The inobjectivity of the response of a specimen of concrete loaded in external pure tension has been clearly related to the presence of inhomogeneities. Some localization process develops within the specimen which prevents directly relating the load-displacement curve and the supposed stress-strain curve. Using a numerical probabilistic damage model for the material, the inhomogeneities can influence the global response of the specimen and how much this response depends on the boundary conditions. It proves difficult, even before the stress peak, to use a stress-strain relation identified directly after a tensile test for the computation of structures.