ORTHOTROPIC PLASTICITY IN METAL SHEETS - A THEORETICAL FRAMEWORK

Authors
TOURKI Z MAKKOUK R ZEGHLOUL A FERRON G
Citation
Z. Tourki et al., ORTHOTROPIC PLASTICITY IN METAL SHEETS - A THEORETICAL FRAMEWORK, Journal of materials processing technology, 45(1-4), 1994, pp. 453-458
Citations number
6
Categorie Soggetti
Material Science
Journal title
Journal of materials processing technology → ACNP
ISSN journal
09240136
Volume
45
Issue
1-4
Year of publication
1994
Pages
453 - 458
Database
ISI
SICI code
0924-0136(1994)45:1-4<453:OPIMS->2.0.ZU;2-6
Abstract
A parametric representation of the yield surface in principal stress s pace is used to formulate constitutive equations for plane-stress plas ticity of orthotropic sheets. The yield function and the associated fl ow rule are analysed by taking account of the orientation of the princ ipal stress axes, and conditions for internal consistency of the model are derived. Based on this general framework, an orthotropic yield cr iterion is proposed, and implemented in calculations of sheet-metal fo rming processes.