چکیده مقاله
Getting a product without causing defects, that happened whether during or after the process, such as wrinkling, surface distortion and springback, it is one of the main challenges in industrial sheet metal forming processes To predict springback most of the methods used to assume a constant Young s modulus during deformation, but recent researchers show to predict springback accurately, modulus variation has to be considered This work is a new study to investigate the effect of the variation of elastic modulus with pre strain on springback in roll forming to develop the finite element FE simulation and control the springback to an acceptable level In this study, ST 37 and ST 12 sheets with the thickness of 2 mm were used The uniaxial tensile tests were employed to determine the variation of elastic modulus Finally, the numerically predicted value of the springback was validated by the roll forming experiments As a result, it found that the variation of elastic modulus has a significant impact on springback accuracy
کلیدواژهها
نویسندگان
Jihad Naofal
Ph D Student, Mech Eng ,Tarbiat Modares Univ , Tehran, IR Iran
Hassan Moslemi Naeini
Prof , Mech Eng ,Tarbiat Modares Univ , Tehran, IR Iran
Siamak Mazdak
Assistant prof , Mech Eng , Tafresh University of Technology , Tafresh, IR Iran
شیوه ارجاع
Naofal, Jihad and Moslemi Naeini, Hassan and Mazdak, Siamak,1398,Improvement of springback Prediction in roll forming using variation of elastic modulus with pre-strain,International Conference on Manufacturing Engineering,Tehran
ارائهشده در
مجموعه مقالات شانزدهمین همایش ملی و پنجمین کنفرانس بین المللی مهندسی ساخت و تولید27 آذر 1398 · تهران