Application of the GTN Model to Quantify Constraint Effects on Ductile Fracture of API X65 Steels

Yun Jae Kim; Chang Kyun Oh; Chang Sik Oh

doi:10.4028/www.scientific.net/KEM.324-325.667

Paper Titles

Simulation of Welding Deformations of Ship Structures
p.651

Phase Constitution, Mechanical Property and Corrosion Resistance of the Ti-Nb Alloys
p.655

Synthesis and Characterization of Magnetic Nanoparticles and Their Reinforcement in Polyurethane Film
p.659

Damage Mechanisms in Polymer Matrix Composites in Extreme Environments
p.663

Application of the GTN Model to Quantify Constraint Effects on Ductile Fracture of API X65 Steels
p.667

Mechanical Properties and Fracture Mechanism of TiCp/ZA-12 Composites
p.671

Research on the Microstructure and Micro-Mechanics Properties of NiAl Intermetallic Coatings
p.675

Dynamics of a Mode III Crack Impacted by Elastic Wave in Half Space with a Removable Rigid Cylindrical Inclusion
p.679

Microscopic Study of Structural Failure Mechanism and Reliability Considering Dead and Fatigue Load
p.683

HomeKey Engineering MaterialsKey Engineering Materials Vols. 324-325Application of the GTN Model to Quantify...

Application of the GTN Model to Quantify Constraint Effects on Ductile Fracture of API X65 Steels

Abstract:

This paper quantifies the effects of geometry, the loading mode and the specimen size on fracture toughness of the API X65 steel, via plane strain finite element (FE) damage analyses using the GTN model. The validity of FE damage analyses is checked first by comparing with experimental test data for small-sized, cracked bar test. Then the analyses are extended to investigate the effects of the relative crack depth and the specimen size on fracture toughness. It is shown that fracture toughness of the API X65 steel increases with decreasing the relative crack depth and increasing the specimen size.