کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
786304 1465652 2011 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Anisotropic responses, constitutive modeling and the effects of strain-rate and temperature on the formability of an aluminum alloy
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Anisotropic responses, constitutive modeling and the effects of strain-rate and temperature on the formability of an aluminum alloy
چکیده انگلیسی

Finite deformation anisotropic responses of AA5182-O, over a wide range of strain-rates (10−4 to 100 s−1) and temperatures (293–473 K) are presented. The plastic anisotropy parameters were experimentally determined from tensile experiments using specimens from sheet material. Using the experimental results under plane stress conditions, the anisotropy coefficients for Barlat’s yield function (YLD96) were calculated at different strain-rates and temperatures. The correlations obtained from YLD96 are in good agreement with the observed experimental results. The strain-rate sensitivity of AA5182-O alloy changed from negative at 293 K to positive at 473 K. Khan–Huang–Liang (KHL) constitutive model is shown to correlate the observed strain-rate and temperature dependent responses reasonably well. The material parameters were obtained from the experimental responses along the rolling direction (RD) of the sheet. Marciniak and Kuckzinsky (M–K) theory was used to obtain the theoretical strain and stress-based forming limit curves (FLCs) at different strain-rates and temperatures. The experimental result from the published literature is compared with the FLCs from the current study.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Plasticity - Volume 27, Issue 4, April 2011, Pages 522–538
نویسندگان
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