J. Phys. IV France 09 (1999) Pr9-157-Pr9-164
Piobert-Lüders and Portevin-Le Châtelier instabilities. Finite element modelling with ABAQUSH. Tsukahara and T. Iung
IRSID, USINOR Group, voie Romaine, BP. 303230, 57283 Maizières-lès-Metz, France
The ABAQUS finite element code has been used to successfully model the Piobert-Lüders (PL) and the Portevin-Le Châtelier (PLC) phenomena under tensile conditions. The local constitutive behaviours developed for the modelling, though simple in their mathematical form, catch the essential physics phenomena underlying the two effects ; namely the dislocation locking by the interstitial atoms and their unlocking under subsequent stress.
© EDP Sciences 1999