Implementation of the GTN Damage Model to Simulate the Small Punch Test on Pre-Cracked Specimens
Copyright policy )Implementation of the GTN Damage Model to Simulate the Small Punch Test on Pre-Cracked Specimens
Nowadays, pre-cracked Small Punch Tests (P-SPT) are used in those cases where there is not enough material for conducting conventional tests. In this paper, P-SPT has been used to determine the fracture properties of the 15.5PH steel, using the micromechanical model, developed by Gurson-Tvergaard-Needleman (GTN). The effect of variation of damage parameters on the numerical simulation has been analyzed. This numerical simulation is based on the sequential adjustment of the experimental load-displacement curves obtained from P-SPT. Interrupted test have been also developed in order to know the cracking process during loading and the damage evolution until fracture.
11th International Conference on the Mechanical Behavior of Materials (ICM11), Como (Italy), 2011
Project MCI Ref: MAT2008-06879-C03-03/MAT
- University of Burgos Spain
Ductile Fracture, Resistencia de materiales, Ensayos (Tecnología), Testing, Small Punch Test, Interrupted Test, Gurson-Tvergaard Damage Model, 15.5PH steel, Strength of materials, Engineering(all), Pre-cracked Specimen
Ductile Fracture, Resistencia de materiales, Ensayos (Tecnología), Testing, Small Punch Test, Interrupted Test, Gurson-Tvergaard Damage Model, 15.5PH steel, Strength of materials, Engineering(all), Pre-cracked Specimen
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