Instabilised Crack Growths
Author(s)
P. Brož
Abstract
Instabilized crack growth
P. Broz*
^ Department of Engineering Structures,
Klokner Institute of the Czech Technical University
Prague, Czech Republic
Abstract
In order to model the fracture behaviour of structures of concrete-like materials,
the cohesive-crack simulation is introduced. A direct boundary element method
is used and indicated to be efficient, given the circumstances that are described
by non-linearity on interfaces only. Procedures for the direction quest and
interface adaptation in growth study and for the stipulation of the resistance to a
process zone-tip advance are worked out and tested. Softening as an instabilizing
consideration included in the cohesive-crack model can bring about trajectory
bifurcations (equilibrium branching), and instabilities both the internal
(snapback) one and when controlled load.
An account of the numerical method to perform fast computation for cohesive-
crack propagation in mode I is also shown.
1 Introduction
A full
Keywords
Related Book
Other papers in this volume
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