4308

4079

كارشناسي ارشد

طراحي كاربردي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده مكانيك

1387

ده،103،[II] ص: مصور، جدول، نمودار

ص.ع. به: فارسي و انگليسي

مهران مرادي

محمود فرزين

26/11/87

محمود سليمي، محمد رضا فروتن

مهندسي مكانيك

ID4079

به فارسي و انگليسي: قابل رويت در نسخه ديجيتال

AbstractDeep drawing is among the processes which are widely used to produce various metal partsone of the most important factors in deigning the process of deep drawing is the limitingdrawing ratio Actually the main aim of the designing is to achieve the highest limitarydrawing ratio in the least possible production time so that the project is economical Considering the complexity of this process in the theoretical view of the problem and also thehigh cost of producing the dies simulating this process before production seems necessaryand inevitable In this research by using tractrix dies and its better design an attempt hasbeen made to prevent the force of punch and other disturbances through omitting the blankholder and secondly to make it possible to use the warm deep drawing process in order toraise the limiting drawing ratio as much as possible In this research process simulation hasbeen prepare in two phases Cold and warm In the first one all analyses are done byAbaqus Explicit through the prepared subroutine elastic plastic The spreading of the crack isshown by omitting the damaged elements And by using the degree of strain equal to plasticin these elements a criterion for the warm deep drawing process is suggested By using thiscriterion the warm deep drawing process is dissolved in the soft ware Abaqus Dynamic Temp Disp Explicit and the damaged elements are disposed

مهران مرادي

محمود فرزين

محمود سليمي، محمد رضا فروتن