Simulasi dan Optimisasi Proses Cup Drawing untuk Mengurangi Cacat Kerut dan Penipisan

Abstract

The purpo se of this research is to determine the eff ect of variations of blank holder force (BHF) an d friction coefficient against wrink ling and thinning defects in the cup drawing process. Simulation s is carried ou t to replace the trad itional method of trial and error. Therefore, the production cost and time can be reduced. There are five variations o f blank holder f orce used in this simulation i.e 37, 57, 77 , 9 7 and 117 N and four variation s of the f riction coefficient of 0.05, 0.15 , 0.25, and 0.35 . Aluminium and Zinc was selected as b lank material with the thick ness of 0.32 an d 0.3 mm respectively. The result shows that the wrink ling was decreased in the increasing of BHF an d friction coefficient. However, the thinning was increased as well. Finally, the opti mum BHF must be selected to give better results in both wrink ling and thinning .