کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6748676 1430213 2015 34 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical modeling and analysis for forming process of dual-phase 980 steel exposed to infrared local heating
ترجمه فارسی عنوان
مدل سازی و تجزیه و تحلیل عددی برای تشکیل فرآیند فولاد دو مرحله ای 980 فولاد در معرض حرارت محلی مادون قرمز
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
A recent experiment confirmed that the infrared (IR) local heating method drastically reduces springback of dual-phase (DP) 980 sheets. In the experiment, only the plastic deformation zone of the sheets was locally heated using condensed IR heating. The heated sheets were then deformed by V-bending or 2D-draw bending. Although the experimental observation proved the merit of using the IR local heating to reduce springback, numerical modeling has not been reported. Numerical modeling has been required to predict springback and improve the understanding of the forming process. This paper presents a numerical modeling for V-bending and 2D-draw bending of DP 980 sheets exposed to the IR local heating with the finite element method (FEM). For describing the thermo-mechanical behavior of the DP 980 sheet, a flow stress model which includes a function of temperature and effective plastic strain was newly implemented into Euler-backward stress integration method. The numerical analysis shows that the IR local heating reduces the level of stress in the deformation zone, although it heats only the limited areas, and then it reduces the springback. The simulation also provides a support that the local heating method has an advantage of shape accuracy over the method to heat the material as a whole in V-bending. The simulated results of the springback in both V-bending and 2D-draw bending also show good predictions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volumes 75–76, 1 December 2015, Pages 211-224
نویسندگان
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