The failure mechanism of a concrete cube
Journal
Proceedings of the 6th International Conference on Engineering Computational Technology
Start Page
07014007
ISBN (of the container)
9781905088249
Date Issued
2008
Author(s)
Abstract
Uni-axial compression test has been the general way to evaluate the strength of bulk materials, especially brittle materials, for decades. In the field of concrete or rock mechanics, compression strength is one of the most significant engineering characteristics. By observing the compression test of a cubic specimen, the most severe compression area in material (the inner central area), however, does not match the damage pattern (side wedge peeling). In the present study, the Discrete Element Method (so-called DEM or Particle Element Method) is employed to analyse a brittle block. One of the important advantages of this method is that material damage due to bonding and friction failure can be better described. In this paper, the results of elasticity, compression strength, and the crack profile of the bulk specimen are carried out using the two-dimensional discrete element method. Upon matching the numerical results to those of the lab test, one can determine the internal material parameters such as bonding strength, the frictional angle, and equivalent stiffness between particles in micro scale. © 2008 Civil-Comp Press.
Event(s)
6th International Conference on Engineering Computational Technology, ECT 2008
Subjects
Discrete element method
FEM
Mohr-Coulomb criterion
Uni-axial compression test
Description
6th International Conference on Engineering Computational Technology, ECT 2008, 2 September 2008 through 5 September 2008, Athens
Type
conference paper