مشخصات پژوهش

عنوان	The effect of the roller profile on cave-in defect in reshaping process by considering nonlinear combine strain hardening
نوع پژوهش	مقاله چاپ‌شده
کلیدواژه‌ها	Roll forming, reshaping, 2D-elastic plastic, cave-in defect, square tube, nonlinear combines strain hardening
چکیده	The reshaping process of pipes is an important method in producing non-circular pipes. Desired profile products are produced by passing round pipe through the rotating rollers. Cave-in defect is one of the common defects in the reshaping process. Roller design issues can decrease this kind of defect. In this paper, a method based on the slab method and the incremental plasticity has been presented to the numerical study of a 2D reshaping process. For investigating the Cave-in defect, the contact model has been developed. The concept of element elongation has been introduced to increase the accuracy of the contact model. Based on the presented method, numerical software has been developed to simulate the 2D reshaping process. Elastic-plastic equations for this subject have been driven based on the incremental method, J yielding criterion, and non-linear combined hardening. The effects of the radius of …
پژوهشگران	حسام ولیدی (نفر پنجم)، مانوبو کیوچی (نفر چهارم)، محمدرضا شیخ الاسلامی بورقانی (نفر سوم)، حسن مسلمی نائینی (نفر دوم)، سیامک مزدک (نفر اول)