کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4922778 | 1430197 | 2016 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An improved test for shear fracture
ترجمه فارسی عنوان
یک تست بهبود یافته برای شکستگی برشی
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
Shear fracture can occur when sheet metal is drawn over a tight die radius during forming. Draw-bend fracture (DBF) tests replicate many aspects of the applied forming situation, but not the high strain rates and plane-strain states typical of industrial conditions. In order to improve on the DBF test, a new high-speed, wide, draw-bend fracture (WDBF) test was configured, implemented, and applied to 5 advanced high strength steels (AHSS) with known constitutive behavior and DBF ductility: DP780, DP590, DP980, TRIP780 and TWIP. Finite element (FE) simulations of the WDBF tests were compared with experiments. Similar comparative simulations were carried out for true plane-strain conditions (unattained experimentally) and for standard DBF tests. The WDBF test was found to be better at reproducing industrial conditions than the DBF test over a much wider range of conditions, but even the new configuration remains substantially different from a hypothetical true plane-strain test. The simulations reveal quantitative assessments of the roles of friction, thermo-mechanical deformation and yield surface choice on shear fracture.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volumes 97â98, 15 October 2016, Pages 29-42
Journal: International Journal of Solids and Structures - Volumes 97â98, 15 October 2016, Pages 29-42
نویسندگان
Li D.Y., Chen Z., Sun L., J.W. Lee, R.H. Wagoner,