کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
797070 1467178 2005 26 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Damage percolation during stretch flange forming of aluminum alloy sheet
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Damage percolation during stretch flange forming of aluminum alloy sheet
چکیده انگلیسی

A multi-scale finite element (FE)-damage percolation model was employed to simulate stretch flange forming of aluminum alloys AA5182 and AA5754. Material softening and strain gradients were captured using a Gurson-based FE model. FE results were then fed into the so-called damage percolation code, from which the damage development was modelled within measured microstructures. The formability of the stretch flange samples was predicted based upon the onset of catastrophic failure triggered by profuse void coalescence within the measured second-phase particle field. Damage development is quantified in terms of crack and void areal fractions, and compared to metallographic results obtained from interrupted stretch flange specimens. Parametric study is conducted on the effect of void nucleation strain in the prediction of formability of stretch flanges to “calibrate” proper nucleation strains for both alloys.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Mechanics and Physics of Solids - Volume 53, Issue 12, December 2005, Pages 2692–2717
نویسندگان
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