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Title: Assessment of Convex Plastic Potentials Derived from Crystallographic Textures

Abstract

The paper is concerned with a method to derive analytical plastic potentials in strain rate space, the parameters of which are identified from the crystallographic texture and the Taylor polycrystal plasticity model. Such potentials are especially suited to account for texture anisotropy in finite element (FE) simulations at an engineering length scale. The potentials strictly guarantee the convexity of the corresponding yield locus in stress space, which is a critical requirement for the numerical stability of the FE simulations. The method is assessed here for a number of industrial steel sheets and aluminium alloy sheets. Particular attention is given to the effects of the modifications needed to ensure convexity on the parameters and on the predicted r-values. The results are compared to both experimental values and the ones obtained directly from the Taylor model.

Authors:
 [1];  [2];  [1]
  1. Dept. MTM, Katholieke Universiteit Leuven, Kasteelpark Arenberg 44, B-3001 Heverlee (Belgium)
  2. (Belgium)
Publication Date:
OSTI Identifier:
21057086
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: 10.1063/1.2729493; (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 ALLOYS; ANISOTROPY; COMPUTERIZED SIMULATION; CRYSTAL STRUCTURE; CRYSTALLOGRAPHY; FINITE ELEMENT METHOD; MODIFICATIONS; PLASTICITY; POLYCRYSTALS; POTENTIALS; SHEETS; STABILITY; STEELS; STRAIN RATE; STRESSES; TEXTURE

Citation Formats

Bael, A. van, Dept. IWT, Katholieke Hogeschool Limburg, Campus Diepenbeek, Agoralaan Gebouw B, bus 3, B-3590 Diepenbeek, and Houtte, P. van. Assessment of Convex Plastic Potentials Derived from Crystallographic Textures. United States: N. p., 2007. Web. doi:10.1063/1.2729493.
Bael, A. van, Dept. IWT, Katholieke Hogeschool Limburg, Campus Diepenbeek, Agoralaan Gebouw B, bus 3, B-3590 Diepenbeek, & Houtte, P. van. Assessment of Convex Plastic Potentials Derived from Crystallographic Textures. United States. doi:10.1063/1.2729493.
Bael, A. van, Dept. IWT, Katholieke Hogeschool Limburg, Campus Diepenbeek, Agoralaan Gebouw B, bus 3, B-3590 Diepenbeek, and Houtte, P. van. Sat . "Assessment of Convex Plastic Potentials Derived from Crystallographic Textures". United States. doi:10.1063/1.2729493.
@article{osti_21057086,
title = {Assessment of Convex Plastic Potentials Derived from Crystallographic Textures},
author = {Bael, A. van and Dept. IWT, Katholieke Hogeschool Limburg, Campus Diepenbeek, Agoralaan Gebouw B, bus 3, B-3590 Diepenbeek and Houtte, P. van},
abstractNote = {The paper is concerned with a method to derive analytical plastic potentials in strain rate space, the parameters of which are identified from the crystallographic texture and the Taylor polycrystal plasticity model. Such potentials are especially suited to account for texture anisotropy in finite element (FE) simulations at an engineering length scale. The potentials strictly guarantee the convexity of the corresponding yield locus in stress space, which is a critical requirement for the numerical stability of the FE simulations. The method is assessed here for a number of industrial steel sheets and aluminium alloy sheets. Particular attention is given to the effects of the modifications needed to ensure convexity on the parameters and on the predicted r-values. The results are compared to both experimental values and the ones obtained directly from the Taylor model.},
doi = {10.1063/1.2729493},
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}
}
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