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Title: Material Models to Study the Bauschinger Effect on an Aluminum Shear Test Specimen

Abstract

Sheet metal forming processes generally involve complex loadings and nonlinear material models. Combinations of drawing, re-drawing and/or reverse drawing operations commonly induce cyclic loads with non-proportional strain paths, leading to Bauschinger effects that can not be predicted by conventional isotropic hardening laws. In order to properly represent this effect, it is also required to accommodate an appropriate kinematic hardening model along with an anisotropic yield function. In this work, two different approaches will be used to predict the Bauschinger effect for an Aluminum shear test specimen: the rate dependent crystal plasticity model and a new combined isotropic/kinematic hardening model based on the two yield surfaces approach (loading and boundary yield surfaces), as recently proposed.

Authors:
;  [1];  [2];  [3]
  1. Centre for Mechanical Technology and Automation, Univ. of Aveiro, 3810-193, Aveiro (Portugal)
  2. Alcoa Technical Center, 100 Technical Dr., PA 15069-0001 (United States)
  3. (Portugal)
Publication Date:
OSTI Identifier:
21061742
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 908; Journal Issue: 1; Conference: NUMIFORM 2007: 9. international conference on numerical methods in industrial forming processes, Porto (Portugal), 17-21 Jun 2007; Other Information: DOI: 10.1063/1.2740889; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM; ALUMINIUM ALLOYS; ANISOTROPY; CRYSTAL STRUCTURE; CRYSTALS; DRAWING; DYNAMIC LOADS; HARDENING; LOADING; NONLINEAR PROBLEMS; PLASTICITY; SHEAR; SHEETS; STRAINS; SURFACES; TESTING

Citation Formats

Cardoso, Rui P. R., Gracio, Jose J., Yoon, Jeong-Whan, and Centre for Mechanical Technology and Automation, Univ. of Aveiro, 3810-193, Aveiro. Material Models to Study the Bauschinger Effect on an Aluminum Shear Test Specimen. United States: N. p., 2007. Web. doi:10.1063/1.2740889.
Cardoso, Rui P. R., Gracio, Jose J., Yoon, Jeong-Whan, & Centre for Mechanical Technology and Automation, Univ. of Aveiro, 3810-193, Aveiro. Material Models to Study the Bauschinger Effect on an Aluminum Shear Test Specimen. United States. doi:10.1063/1.2740889.
Cardoso, Rui P. R., Gracio, Jose J., Yoon, Jeong-Whan, and Centre for Mechanical Technology and Automation, Univ. of Aveiro, 3810-193, Aveiro. Thu . "Material Models to Study the Bauschinger Effect on an Aluminum Shear Test Specimen". United States. doi:10.1063/1.2740889.
@article{osti_21061742,
title = {Material Models to Study the Bauschinger Effect on an Aluminum Shear Test Specimen},
author = {Cardoso, Rui P. R. and Gracio, Jose J. and Yoon, Jeong-Whan and Centre for Mechanical Technology and Automation, Univ. of Aveiro, 3810-193, Aveiro},
abstractNote = {Sheet metal forming processes generally involve complex loadings and nonlinear material models. Combinations of drawing, re-drawing and/or reverse drawing operations commonly induce cyclic loads with non-proportional strain paths, leading to Bauschinger effects that can not be predicted by conventional isotropic hardening laws. In order to properly represent this effect, it is also required to accommodate an appropriate kinematic hardening model along with an anisotropic yield function. In this work, two different approaches will be used to predict the Bauschinger effect for an Aluminum shear test specimen: the rate dependent crystal plasticity model and a new combined isotropic/kinematic hardening model based on the two yield surfaces approach (loading and boundary yield surfaces), as recently proposed.},
doi = {10.1063/1.2740889},
journal = {AIP Conference Proceedings},
number = 1,
volume = 908,
place = {United States},
year = {Thu May 17 00:00:00 EDT 2007},
month = {Thu May 17 00:00:00 EDT 2007}
}