کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
829687 1470343 2014 8 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Analysis of the extended stress-based forming limit curve considering the effects of strain path and through-thickness normal stress
ترجمه فارسی عنوان
تجزیه و تحلیل منحنی محدود کننده شکل گیری مبتنی بر استرس با توجه به اثرات مسیر فشار و از طریق تنش نرمال تنش
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
چکیده انگلیسی


• A modified M–K method for computation of extended stress-based FLC is proposed.
• The effect of strain path on the predicted extended stress-based FLC is reexamined.
• This new criterion is much less strain path dependent than the conventional FLC.
• Through-thickness compressive normal stress is also considered in analysis.

In this study, an approach based on the modified Marciniak–Kuczynski (M–K) method for computation of an extended stress-based forming limit curve (FLC) is presented. The extended stress-based FLC is built based on equivalent plastic stress versus mean stress. This curve has some advantages in comparison with the conventional FLC. This new criterion is much more strain path independent than the conventional FLC. The effect of strain path on the predicted extended stress-based FLC is reexamined. For this purpose, two types of pre-straining on the sheet metal have been loaded. Moreover, the plane stress state assumption is not adopted in the current study. The influence of a through-thickness compressive normal stress is also investigated theoretically. The verifications of the theoretical FLCs are performed by using some available published experimental data.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design (1980-2015) - Volume 54, February 2014, Pages 670–677
نویسندگان
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