Earing predictions for strongly textured aluminum sheets

Cited 56 time in webofscience Cited 0 time in scopus
  • Hit : 287
  • Download : 0
Metallic alloy sheets develop crystallographic texture and plastic anisotropy during rolling. Deep drawing of a cylindrical cup from a rolled sheet is one of the typical forming operations where the effect of this anisotropy is most evident. Generally, in the finite element analyses of this process, the evolution of anisotropy during forming is neglected. In this paper, results of an experimental program carried out to quantify the anisotropy of aluminum alloy AA5042-H2 are reported. In addition to tensile tests along seven directions in the plane of the sheet, cup-drawing tests were conducted. It was observed that the material displays eight ears. The effects of the evolution in anisotropy and the directionality in hardening on the predictions of the earing profile for this material are investigated using a new methodology that incorporates multiple hardening curves corresponding to uniaxial tension along several orientations with respect to the rolling direction, and to biaxial tension. Yielding is described using the anisotropic yield function Yld2000-2D [1] and a form of CPB06ex2 yield function In which is tailored for metals with no tension-compression asymmetry. It is shown that even if distortional hardening is neglected, the latter yield function predicts a cup with eight ears as was observed experimentally. Consideration of distortional only leads to improved accuracy in prediction of the non-uniformity of the cup height profile. (C) 2010 Elsevier Ltd. All rights reserved.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2010-12
Language
English
Article Type
Article
Keywords

ANISOTROPIC YIELD FUNCTIONS; KINEMATIC HARDENING LAWS; SPRING-BACK EVALUATION; ALLOY SHEETS; PART II; ELEVATED-TEMPERATURES; METALS; CRITERION; DEFORMATION; FORMULATION

Citation

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, v.52, no.12, pp.1563 - 1578

ISSN
0020-7403
DOI
10.1016/j.ijmecsci.2010.07.005
URI
http://hdl.handle.net/10203/203775
Appears in Collection
ME-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 56 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0