چکیده مقاله
In this paper, to predict the hydroforming limit for X joints, two different criteria for ductile fracture are introduced into the finite element simulation and their values are calculated from the histories of stress and strain in each element The initiation of fracture is predicted by means of these two fracture criteria The obtained results are checked with those in the literatures using forming limit curve FLC method and experimental data Very good agreements exist between our results and the reported experimental data However, it seems that the predicted results for the onset of strain localization and bursting failure using FLC method gives a considerable underestimation of hydroforming limit for X joints Hence, it is believed that the present approach using the ductile fracture criteria give better prediction and could be used in hydroforming process planning specifically in X joints
کلیدواژهها
شیوه ارجاع
1388,Numerical approach to prediction of forming limit in hydroforming of X-joints,10th Iranian Conference on Manufacturing Engineering (ICME 2010),Babol
ارائهشده در
مجموعه مقالات دهمین کنفرانس ملی مهندسی ساخت و تولید10 اسفند 1388 · بابل