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A Corotational Flow Rule for Rigid Plastic Hardening Materials Based on Logarithmic Strain Tensor

[+] Author Affiliations
Reza Naghdabadi, Mehdi Yeganeh, Alireza Saidi

Sharif University of Technology, Tehran, Iran

Paper No. PVP2002-1198, pp. 95-102; 8 pages
doi:10.1115/PVP2002-1198
From:
  • ASME 2002 Pressure Vessels and Piping Conference
  • New and Emerging Computational Methods: Applications to Fracture, Damage, and Reliability
  • Vancouver, BC, Canada, August 5–9, 2002
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-1949-3
  • Copyright © 2002 by ASME

abstract

In this paper a flow rule for rigid plastic hardening materials based on von Mises yield criterion is introduced. This flow rule relates the corotational rate of the logarithmic strain tensor to the difference of the deviatoric Cauchy stress and the back stress tensors. Using different corotational rates in the proposed flow rule, the deviatoric Cauchy stress tensor is calculated for rigid plastic isotropic, kinematic and combined hardening materials in the simple shear problem at large deformations. For the purpose of verification, the results for different corotational rates are compared with the results presented in referenced articles.

Copyright © 2002 by ASME

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