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oai:riubu.ubu.es:10259/42032021-11-02T12:04:49Zcom_10259_4201com_10259_5086com_10259_2604col_10259_4202

Implementation of the GTN Damage Model to Simulate the Small Punch Test on Pre-Cracked Specimens Alegre Calderón, Jesús Manuel Cuesta Segura, Isidoro Iván Bravo Díez, Pedro Miguel Small Punch Test Pre-cracked Specimen Gurson-Tvergaard Damage Model Ductile Fracture Interrupted Test 15.5PH steel 11th International Conference on the Mechanical Behavior of Materials (ICM11), Como (Italy), 2011 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. 2016-08-29T10:07:08Z 2016-08-29T10:07:08Z 2011 info:eu-repo/semantics/conferenceObject 1877-7058 http://hdl.handle.net/10259/4203 10.1016/j.proeng.2011.04.166 eng Procedia Engineering. 2011, v. 10, p. 1007-1016 http://dx.doi.org/10.1016/j.proeng.2011.04.166 info:eu-repo/grantAgreement/MICINN/MAT2008-06879-C03-03/MAT http://creativecommons.org/licenses/by-nc-nd/3.0 info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivs 3.0 Unported Elsevier