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A hybrid method to update stress for perfect von-Mises plasticity coupled with Lemaitre damage mechanics

Maliheh Tavoosi (Department of Civil Engineering, Quchan University of Technology, Quchan, Iran)
Mehrdad Sharifian (Department of Civil Engineering, Quchan University of Technology, Quchan, Iran)
Mehrzad Sharifian (Department of Civil Engineering, Quchan University of Technology, Quchan, Iran)

Engineering Computations

ISSN: 0264-4401

Article publication date: 12 August 2019

Abstract

Purpose

The purpose of this paper is to suggest a robust hybrid method for updating the stress and plastic internal variables in plasticity considering damage mechanics.

Design/methodology/approach

By benefiting the properties of the well-known explicit and implicit integrations, a new mixed method is derived. In fact, the advantages of the mentioned techniques are used to achieve an efficient integration.

Findings

The numerical studies demonstrate the high precision and robustness of the suggested algorithm.

Research limitations

The perfect von-Mises plasticity together with Lemaitre damage model is considered within the realm of small deformations.

Practical implications

Updating stress and plastic internal variables are of utmost importance in elastoplastic analyses of structures. The accuracy and efficiency of stress-updating methods significantly affect the final outcomes of nonlinear analyses.

Originality/value

The idea which is used to derive the hybrid method leads to an efficient integration method for updating the constitutive equations of the damage mechanics.

Keywords

Citation

Tavoosi, M., Sharifian, M. and Sharifian, M. (2019), "A hybrid method to update stress for perfect von-Mises plasticity coupled with Lemaitre damage mechanics", Engineering Computations, Vol. 37 No. 2, pp. 705-729. https://doi.org/10.1108/EC-01-2019-0007

Publisher

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Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited