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Dislocations, Plasticity and Metal Forming: Proceedings of PLASTICITY'03: The Tenth International Symposium on Plasticity and its Current Applications, A.A. Khan, R. Kazmi and J. Zhou (eds.). Maryland: NEAT Press.
 

Summary: Dislocations, Plasticity and Metal Forming: Proceedings of PLASTICITY'03: The Tenth International Symposium on
Plasticity and its Current Applications, A.A. Khan, R. Kazmi and J. Zhou (eds.). Maryland: NEAT Press.
570
A UNIFIED MULTIAXIAL FORMULATION
TO DESCRIBE YIELDING, PLASTIC POTENTIAL,
AND LIMIT STATES OF ENGINEERING MATERIALS.
Michel Aubertin* and Li Li
Dept. CGM, Ecole Polytechnique
C.P. 6079, Station Centre-Ville, Montréal, Qc, Canada, H3C 3A7
* corresponding author: Michel.Aubertin@polymtl.ca
ABSTRACT- Most existing criteria developed to describe the yield condition, plastic
potential, and limit states of engineering materials present some apparently distinct
characteristics. In this short presentation, it is shown that a physically-based multiaxial
criterion (named MSDPu) can be used, for low and high porosity materials, to capture
their essential features in a three-dimensional stress space. Such unified representation is
very useful to reconcile many of the various approaches used for pressure dependent
criteria.
INTRODUCTION: Over the years, a large number of formulations have been
developed to describe the yield condition, plastic or viscoplastic potential, and limit
(failure) states of engineering materials such as metals, ceramics, concrete, powders,

  

Source: Aubertin, Michel - Département des génies civil, géologique et des mines, École Polytechnique de Montréal

 

Collections: Engineering; Environmental Management and Restoration Technologies