Quasi-Static Simulation of Crack Growth in Elastic Materials Considering Internal Boundaries and Interfaces

P. Judt; Andreas Ricoeur

doi:10.4028/www.scientific.net/KEM.525-526.181

Paper Titles

Fatigue Test of Small Sized AZ31 Magnesium Alloy Using Micropillar Specimen
p.165

Fatigue Behavior of A356 Cast Aluminum Alloy Microstructurally Modified by Friction Stir Processing under Low Strain Rate Condition
p.169

Load Influence on the Behavior of Micro-Crack in the Particulate Composite
p.173

Pressure Pipe Damage: Numerical Estimation of Point Load Effect
p.177

Quasi-Static Simulation of Crack Growth in Elastic Materials Considering Internal Boundaries and Interfaces
p.181

Deterioration of FRC Plate due to Explosion and Change of Temperature
p.185

Monitoring Fatigue Cracks and Stress Intensity Factors Based on the Distributed Dislocation Technique
p.189

Computational Characterization of Micro-To Macroscopic Deformation Behavior of Double Network Hydrogel
p.193

Multilevel/Multiobjective Design of Composite Structures
p.197

HomeKey Engineering MaterialsKey Engineering Materials Vols. 525-526Quasi-Static Simulation of Crack Growth in Elastic...

Quasi-Static Simulation of Crack Growth in Elastic Materials Considering Internal Boundaries and Interfaces

Abstract:

This work presents numerical methods used for predicting crack paths in technicalstructures based on the theory of linear elastic fracture mechanics. The FE-method is usedin combination with an efficient remeshing algorithm to simulate crack growth. A post pro-cessor providing loading parameters such as the J-integral and stress intensity factors (SIF) ispresented. Path-independent contour integrals are used to avoid special requirements concern-ing crack tip meshing and to enable efficient calculations for domains including interfaces andinternal boundaries. In particular, the interaction of cracks and internal boundaries and inter-faces is investigated. The simulation combines crack propagation within elastic bodies and atbi-material interfaces. The latter is based on a cohesive zone model. The presented numericalresults of crack paths are verified by experiments.