skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A finite strain isotropic/kinematic hardening model for springback simulation of sheet metals

Abstract

Crucial for the accurate prediction of the blank springback is the use of an appropriate material model, which is capable of modelling the typical cyclic hardening behaviour of metals (e.g. Bauschinger effect, ratchetting). The proposed material model combines both nonlinear isotropic hardening and nonlinear kinematic hardening, and is defined in the finite strain regime. The kinematic hardening component represents a continuum extension of the classsical rheological model of Armstrong-Frederick kinematic hardening. The evolution equations of the model are integrated by a new form of the exponential map algorithm, which preserves the plastic volume and the symmetry of the internal variables. Finally, the applicability of the model for springback prediction has been demonstrated by performing simulations of the draw-bending process.

Authors:
;  [1]
  1. Institute of Solid Mechanics, Braunschweig University of Technology, D-38106 Braunschweig (Germany)
Publication Date:
OSTI Identifier:
21056996
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 907; Journal Issue: 1; Conference: 10. ESAFORM conference on material forming, Zaragoza (Spain), 18-20 Apr 2007; Other Information: DOI: 10.1063/1.2729501; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALGORITHMS; ALLOYS; BENDING; COMPUTERIZED SIMULATION; HARDENING; METALS; NONLINEAR PROBLEMS; NUMERICAL ANALYSIS; PLASTICITY; STRAINS; SYMMETRY

Citation Formats

Vladimirov, Ivaylo N., and Reese, Stefanie. A finite strain isotropic/kinematic hardening model for springback simulation of sheet metals. United States: N. p., 2007. Web. doi:10.1063/1.2729501.
Vladimirov, Ivaylo N., & Reese, Stefanie. A finite strain isotropic/kinematic hardening model for springback simulation of sheet metals. United States. doi:10.1063/1.2729501.
Vladimirov, Ivaylo N., and Reese, Stefanie. Sat . "A finite strain isotropic/kinematic hardening model for springback simulation of sheet metals". United States. doi:10.1063/1.2729501.
@article{osti_21056996,
title = {A finite strain isotropic/kinematic hardening model for springback simulation of sheet metals},
author = {Vladimirov, Ivaylo N. and Reese, Stefanie},
abstractNote = {Crucial for the accurate prediction of the blank springback is the use of an appropriate material model, which is capable of modelling the typical cyclic hardening behaviour of metals (e.g. Bauschinger effect, ratchetting). The proposed material model combines both nonlinear isotropic hardening and nonlinear kinematic hardening, and is defined in the finite strain regime. The kinematic hardening component represents a continuum extension of the classsical rheological model of Armstrong-Frederick kinematic hardening. The evolution equations of the model are integrated by a new form of the exponential map algorithm, which preserves the plastic volume and the symmetry of the internal variables. Finally, the applicability of the model for springback prediction has been demonstrated by performing simulations of the draw-bending process.},
doi = {10.1063/1.2729501},
journal = {AIP Conference Proceedings},
number = 1,
volume = 907,
place = {United States},
year = {Sat Apr 07 00:00:00 EDT 2007},
month = {Sat Apr 07 00:00:00 EDT 2007}
}