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Title: Influence of Anisotropy Properties in Finite Element Optimization of Blank Shape Using NURBS Surfaces

Abstract

Sheet metal forming is a complex process controlled by process parameters and material properties of the blank sheet. The initial anisotropy has influence on the determination of optimal blank shape because it governs the material flow. In this paper, the influence of the initial anisotropy, in achieving an optimal blank shape, is analyzed using mild steel (DC06) blank sheet and two different tool geometries: circular and rectangular cup. The numerical method is based on the initial NURBS surface used to produce the mesh that models the blank and the resulting flange geometry of the deformed part. Different rolling direction orientations were considered in the blanks for deep drawing to investigate their effect on the blank shape optimization procedure. From the numerical study it is evident that the described method is sensitive to the initial anisotropy in the material and can produce optimal initial blank shape within few iterations.

Authors:
; ; ;  [1];  [2]
  1. CEMUC, Department of Mechanical Engineering, University of Coimbra, Polo II, Pinhal de Marrocos, 3030-201Coimbra (Portugal)
  2. Department of Mechanical Engineering, University of Minho, Campus de Azurem, 4800-058 Guimaraes (Portugal)
Publication Date:
OSTI Identifier:
21057011
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: 10.1063/1.2729512; (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; ANISOTROPY; CARBON STEELS; COMPUTERIZED SIMULATION; DRAWING; FINITE ELEMENT METHOD; FLANGES; METALS; NUMERICAL ANALYSIS; OPTIMIZATION; ORIENTATION; ROLLING; SHEETS; SURFACES

Citation Formats

Padmanabhan, R., Oliveira, M. C., Baptista, A. J., Menezes, L. F., and Alves, J. L. Influence of Anisotropy Properties in Finite Element Optimization of Blank Shape Using NURBS Surfaces. United States: N. p., 2007. Web. doi:10.1063/1.2729512.
Padmanabhan, R., Oliveira, M. C., Baptista, A. J., Menezes, L. F., & Alves, J. L. Influence of Anisotropy Properties in Finite Element Optimization of Blank Shape Using NURBS Surfaces. United States. doi:10.1063/1.2729512.
Padmanabhan, R., Oliveira, M. C., Baptista, A. J., Menezes, L. F., and Alves, J. L. Sat . "Influence of Anisotropy Properties in Finite Element Optimization of Blank Shape Using NURBS Surfaces". United States. doi:10.1063/1.2729512.
@article{osti_21057011,
title = {Influence of Anisotropy Properties in Finite Element Optimization of Blank Shape Using NURBS Surfaces},
author = {Padmanabhan, R. and Oliveira, M. C. and Baptista, A. J. and Menezes, L. F. and Alves, J. L.},
abstractNote = {Sheet metal forming is a complex process controlled by process parameters and material properties of the blank sheet. The initial anisotropy has influence on the determination of optimal blank shape because it governs the material flow. In this paper, the influence of the initial anisotropy, in achieving an optimal blank shape, is analyzed using mild steel (DC06) blank sheet and two different tool geometries: circular and rectangular cup. The numerical method is based on the initial NURBS surface used to produce the mesh that models the blank and the resulting flange geometry of the deformed part. Different rolling direction orientations were considered in the blanks for deep drawing to investigate their effect on the blank shape optimization procedure. From the numerical study it is evident that the described method is sensitive to the initial anisotropy in the material and can produce optimal initial blank shape within few iterations.},
doi = {10.1063/1.2729512},
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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