FraMCoS 7 2010 Jeju, South Korea

Particle discretization techniques for fracture simulation of concrete materials

The fracture behavior of concrete depends on the properties and distributions of its primary phases (cement-based matrix, aggregate inclusions, and matrix-inclusion interfaces). The quality of fracture simulations at the material mesoscale, at which these phases are explicitly modeled, depends largely…

First page of: Particle discretization techniques for fracture simulation of concrete materials
Year 2010
File Size 1.3 MB
Download PDF (1.3 MB)

Abstract

The fracture behavior of concrete depends on the properties and distributions of its primary phases (cement-based matrix, aggregate inclusions, and matrix-inclusion interfaces). The quality of fracture simulations at the material mesoscale, at which these phases are explicitly modeled, depends largely on the discretization strategy. This paper describes a Voronoi-based discretization procedure for fracture simulations of particulate materials such as concrete. Attention is given to the discretization of individual particles, as- sumed to be convex polyhedra, within the material domain. Explicit modeling of the matrix-inclusion inter- face enables more realistic simulations of inclusion debonding. The dependence of interface fracture on parti- cle shape is demonstrated using a lattice-based simulation approach.