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Title: Forming Limit Predictions for Single-Point Incremental Sheet Metal Forming

Abstract

A characteristic of incremental sheet metal forming is that much higher deformations can be achieved than conventional forming limits. In this paper it is investigated to which extent the highly non-monotonic strain paths during such a process may be responsible for this high formability. A Marciniak-Kuczynski (MK) model is used to predict the onset of necking of a sheet subjected to the strain paths obtained by finite-element simulations. The predicted forming limits are considerably higher than for monotonic loading, but still lower than the experimental ones. This discrepancy is attributed to the strain gradient over the sheet thickness, which is not taken into account in the currently used MK model.

Authors:
 [1];  [2]; ; ;  [1];  [3]; ;  [4];  [5]
  1. Dept. MTM, Katholieke Universiteit Leuven, Kasteelpark Arenberg 44, B-3001 Heverlee (Belgium)
  2. (Belgium)
  3. Dept. MEMC, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels (Belgium)
  4. Dept. ArGEnCo, Universite de Liege, Chemin des Chevreuils 1, B-4000 Liege (Belgium)
  5. Dept. PMA, Katholieke Universiteit Leuven, Celestijnenlaan 300B, B-3001 Heverlee (Belgium)
Publication Date:
OSTI Identifier:
21057025
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: 10.1063/1.2729530; (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; ALLOYS; COMPUTERIZED SIMULATION; DEFORMATION; FINITE ELEMENT METHOD; LOADING; MATERIALS WORKING; MATHEMATICAL MODELS; METALS; NUMERICAL ANALYSIS; SHEETS; STRAINS; THICKNESS

Citation Formats

Bael, A. van, Dept. IWT, Katholieke Hogeschool Limburg, Campus Diepenbeek, Agoralaan Gebouw B, bus 3, B-3590 Diepenbeek, Eyckens, P., He, S., Houtte, P. van, Bouffioux, C., Henrard, C., Habraken, A. M., and Duflou, J. Forming Limit Predictions for Single-Point Incremental Sheet Metal Forming. United States: N. p., 2007. Web. doi:10.1063/1.2729530.
Bael, A. van, Dept. IWT, Katholieke Hogeschool Limburg, Campus Diepenbeek, Agoralaan Gebouw B, bus 3, B-3590 Diepenbeek, Eyckens, P., He, S., Houtte, P. van, Bouffioux, C., Henrard, C., Habraken, A. M., & Duflou, J. Forming Limit Predictions for Single-Point Incremental Sheet Metal Forming. United States. doi:10.1063/1.2729530.
Bael, A. van, Dept. IWT, Katholieke Hogeschool Limburg, Campus Diepenbeek, Agoralaan Gebouw B, bus 3, B-3590 Diepenbeek, Eyckens, P., He, S., Houtte, P. van, Bouffioux, C., Henrard, C., Habraken, A. M., and Duflou, J. Sat . "Forming Limit Predictions for Single-Point Incremental Sheet Metal Forming". United States. doi:10.1063/1.2729530.
@article{osti_21057025,
title = {Forming Limit Predictions for Single-Point Incremental Sheet Metal Forming},
author = {Bael, A. van and Dept. IWT, Katholieke Hogeschool Limburg, Campus Diepenbeek, Agoralaan Gebouw B, bus 3, B-3590 Diepenbeek and Eyckens, P. and He, S. and Houtte, P. van and Bouffioux, C. and Henrard, C. and Habraken, A. M. and Duflou, J.},
abstractNote = {A characteristic of incremental sheet metal forming is that much higher deformations can be achieved than conventional forming limits. In this paper it is investigated to which extent the highly non-monotonic strain paths during such a process may be responsible for this high formability. A Marciniak-Kuczynski (MK) model is used to predict the onset of necking of a sheet subjected to the strain paths obtained by finite-element simulations. The predicted forming limits are considerably higher than for monotonic loading, but still lower than the experimental ones. This discrepancy is attributed to the strain gradient over the sheet thickness, which is not taken into account in the currently used MK model.},
doi = {10.1063/1.2729530},
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}
}