期刊
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
卷 52, 期 4, 页码 612-625出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijmecsci.2010.01.001
关键词
Friction stir welding; Tailor welded blanks; Formability; Aluminum alloy sheets; Anisotropic yield function; Forming limit diagram
资金
- Korea government (MEST) [R11-2005-065]
In order to evaluate the formability of friction stir welded (FSW) automotive TWB (tailor-welded blank) sheets with respect to base material direction, the aluminum alloy 6111-T4 sheet was joined with three different types of combination: RD parallel to RD,TD parallel to RD, TD parallel to TD (Here, RD and TD mean the rolling direction and transverse direction, respectively). Formability performance was experimentally and numerically studied in three applications including the simple tension tests, hemisphere dome stretching and cylindrical cup drawing tests. For numerical simulations, the non-quadratic orthogonal anisotropic yield function, Yld2004-18p and the isotropic hardening law were implemented into the material constitutive model. As for the failure criterion, the forming limit diagram (FLD) was utilized to determine the failure strain. (C) 2010 Elsevier Ltd. All rights reserved.
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