3369

3208

كارشناسي ارشد

ساخت و توليد

اصفهان: دانشگاه صنعتي اصفهان، دانشكده مكانيك

1385

ده، 101، [II]ص: مصور، نمودار

ص. ع. به فارسي و انگليسي

مهران مرادي

محمود فرزين

ناصر نهضت، محمدرضا فروزان

1396/02/24

كتابنامه

مكانيك

مهندسي مكانيك

ID3208

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

AbstractMetal blanking is a widely used technique in high volume production of metalcomponents General guidelines for this process exist but are not sufficient to overcome thetrial and error situation in designing blanking processes where requirements for cycle timeand product dimensions become more demanding Therefore appropriate modelling andunderstanding of the blanking process could be beneficial to control the product shape of ablanked edge In this research some parameters related to the conventional blanking fineblanking and punchless piercing processes were investigated Abaqus Explicit was usedand for all the simulations equilibrium equations were solved by the software but theDamage related equations were simultaneously solved by a prepared subroutine VUMAT Damage parameters were calibrated by a simulated tensile test and finallydifferent models for a blanking punching process were compared The Remeshing facilitywas used to avoid severe Element deformation and also to simulate crack propagation theElement Deletion method was chose By using the Lemaitre damage model and for the firsttime some simulations were carried out to find out the effect of different Die corner shapeson the produced blank According to the obtained results the calibration methods fordetermining the damage parameters was recognized to be unreliable and also it wassuggested to use Non local method in calculating the plastic strain and damage parameter

مهران مرادي

محمود فرزين

ناصر نهضت، محمدرضا فروزان