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Title: Anisotropy and Formability in Sheet Metal Forming

Abstract

Two types of anisotropy have been introduced in the Marciniak model for the prediction of forming limit diagrams (FLDs) of sheet material. One type is due to crystallographic texture, the other is due to dislocation substructure. First, an anisotropic plastic potential is derived from a measured crystallographic texture using a multilevel model. The yield locus can be derived from this plastic potential. In addition to this, a model is used to simulate microstructure-induced work hardening and softening. This model can take effects of strain path changes into account. Both the texture-based and microstructure-based anisotropic model are then implemented in the Marciniak model and used for FLD calculation. Examples of application are given for IOF steel and for aluminium alloys. Recent research has focused on the physical basis of the microstructure-induced work hardening and softening. The principles of this model will be elucidated.

Authors:
; ;  [1]
  1. Department MTM, Katholieke Universiteit Leuven, Kasteelpark Arenberg 44, BE-3001 Leuven (Belgium)
Publication Date:
OSTI Identifier:
21057381
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 908; Journal Issue: 1; Conference: NUMIFORM '07: 9. international conference on numerical methods in industrial forming processes, Porto (Portugal), 17-21 Jun 2007; Other Information: DOI: 10.1063/1.2740805; (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; DISLOCATIONS; MATERIALS WORKING; MATHEMATICAL MODELS; METALS; MICROSTRUCTURE; NUMERICAL ANALYSIS; PLASTICITY; SHEETS; STEELS; STRAIN HARDENING; STRAINS; TEXTURE

Citation Formats

Houtte, P. van, Bael, A., and He, S. van. Anisotropy and Formability in Sheet Metal Forming. United States: N. p., 2007. Web. doi:10.1063/1.2740805.
Houtte, P. van, Bael, A., & He, S. van. Anisotropy and Formability in Sheet Metal Forming. United States. doi:10.1063/1.2740805.
Houtte, P. van, Bael, A., and He, S. van. Thu . "Anisotropy and Formability in Sheet Metal Forming". United States. doi:10.1063/1.2740805.
@article{osti_21057381,
title = {Anisotropy and Formability in Sheet Metal Forming},
author = {Houtte, P. van and Bael, A. and He, S. van},
abstractNote = {Two types of anisotropy have been introduced in the Marciniak model for the prediction of forming limit diagrams (FLDs) of sheet material. One type is due to crystallographic texture, the other is due to dislocation substructure. First, an anisotropic plastic potential is derived from a measured crystallographic texture using a multilevel model. The yield locus can be derived from this plastic potential. In addition to this, a model is used to simulate microstructure-induced work hardening and softening. This model can take effects of strain path changes into account. Both the texture-based and microstructure-based anisotropic model are then implemented in the Marciniak model and used for FLD calculation. Examples of application are given for IOF steel and for aluminium alloys. Recent research has focused on the physical basis of the microstructure-induced work hardening and softening. The principles of this model will be elucidated.},
doi = {10.1063/1.2740805},
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}
}