2017
DOI: 10.4028/www.scientific.net/msf.898.735
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Numerical Study of the Crack-Front Constraint for SENT Specimens of X80 Pipeline Steel

Abstract: This work presents a numerical study of crack-front constraint for SENT specimens of X80 pipeline steel, to examine geometry effect on the correlation of crack-front stress field and constraint. An average measure of constraint over crack-front Am was employed to characterize the crack-front constraint. SENT specimens with varying geometries (different crack depth to specimen width ratio, a/W, and different specimen width and thickness, W/B) were analyzed by Gurson-Tvergaard-Needleman model (GTN model). Result… Show more

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