NDLI: Numerical implementation of a $$J_2$$ - and $$J_3$$ -dependent plasticity model based on a spectral decomposition of the stress deviator

Content Provider	Springer Nature Link
Author	Kroon, Martin Faleskog, Jonas
Copyright Year	2013
Abstract	A new plasticity model with a yield criterion that depends on the second and third invariants of the stress deviator is proposed. The model is intended to bridge the gap between von Mises’ and Tresca’s yield criteria. An associative flow rule is employed. The proposed model contains one new non-dimensional key material parameter, that quantifies the relative difference in yield strength between uniaxial tension and pure shear. The yield surface is smooth and convex. Material strain hardening can be ascertained by a standard uniaxial tensile test, whereas the new material parameter can be determined by a test in pure shear. A fully implicit backward Euler method is developed and presented for the integration of stresses with a tangent operator consistent with the stress updating scheme. The stress updating method utilizes a spectral decomposition of the deviatoric stress tensor, which leads to a stable and robust updating scheme for a yield surface that exhibits strong and rapidly changing curvature in the synoptic plane. The proposed constitutive theory is implemented in a finite element program, and the influence of the new material parameter is demonstrated in two numerical examples.
Starting Page	1059
Ending Page	1070
Page Count	12
File Format	PDF
ISSN	01787675
Journal	Computational Mechanics
Volume Number	52
Issue Number	5
e-ISSN	14320924
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-04-25
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Plasticity Yield criterion Third invariant Tresca Spectral decomposition Theoretical and Applied Mechanics Computational Science and Engineering Classical Continuum Physics
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Ocean Engineering Computational Theory and Mathematics Mechanical Engineering Computational Mechanics Computational Mathematics

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