Paper Title:
A Micromechanical Model for Ductile Fracture of API X65
  Abstract

This paper presents a micro-mechanical model of ductile fracture for the API X65 steel, using the Gurson-Tvergaard-Needleman (GTN) model. Experimental tests and FE damage simulations using the GTN model are performed for smooth and notched tensile bars with three different notch radii, from which micromechanical parameters in the GTN model are calibrated. The calibrated micro-mechanical model is applied to quantify pre-strain effects on plastic deformation and fracture of the API X65 steel. Good agreements of the FE damage results with experimental data suggest confidence in the use of the proposed micro-mechanical model to simulate ductile failure of pipelines made of API X65 steels.

  Info
Periodical
Key Engineering Materials (Volumes 321-323)
Edited by
Seung-Seok Lee, Joon Hyun Lee, Ik Keun Park, Sung-Jin Song, Man Yong Choi
Pages
43-47
DOI
10.4028/www.scientific.net/KEM.321-323.43
Citation
C. K. Oh, Y. J. Kim, J. H. Baek, Y. P. Kim, W. S. Kim, "A Micromechanical Model for Ductile Fracture of API X65", Key Engineering Materials, Vols. 321-323, pp. 43-47, 2006
Online since
October 2006
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Price
$32.00
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