چکیده مقاله
In most cold forming operations, formability is limited by ductile fracture This study presents an FEM simulation of upsetting process to predict when and where material is likely to fracture The concept of continuum damage mechanics has been retained to describe the progressive damage accumulation into the bulk metal leading to the final rupture and a fully coupled Lemaitre damage model was implemented through a subroutine VUMAT in Abaqus/Explicit The simulation results have been compared to the corresponding results obtained from an experimental upsetting process It is found that the numerical predictions are in good agreement with the experimental results
کلیدواژهها
نویسندگان
M Khalilian
Mechanical Engineering Department, Mazandaran University, Babol, Iran
M Farzin
Mechanical Engineering Department, Isfahan University of Technology, Isfahan,Iran
M Bakhshi-Jooybari
Mechanical Engineering Department, Mazandaran University, Babol, Iran
شیوه ارجاع
Khalilian, M and Farzin, M and Bakhshi-Jooybari, M,1386,Calculation of Upsetting Limit using Lemaitre Coupled Damage Model,02nd Tehran International Congress on Manufacturing Engineering (TICME2007),Tehran
ارائهشده در
مجموعه مقالات دومین کنفرانس بین المللی و هشتمین کنفرانس ملی مهندسی ساخت و تولید10 اسفند 1386 · تهران