Experimental and numerical analysis on deep drawing rectangular cups made of different anisotropic materials

Abstract

Deep drawing process is a significant metal forming process used in the sheet metal forming industries. From these process most complex shapes is manufactured with less defects. Deep drawing process has many effectible process parameters from which optimum parameters must be identified so that an efficient final product will be obtained. In which effects of different sheets on deep drawing process observed for sheet metal of 0.8mm of SS304, Brass and 0.9 mm of Al. The experiments are performed by designing the deep drawing tools such as die, blank holder, and punch. Also the numerical simulations are performed for deep drawing of rectangular cups using two levels of aforesaid parameters like lubricating condition and blank material. The experiments are conducted by attaching the deep drawing tools to the Universal Testing Machine. For numerical simulation a commercial FEM code is used in which Hollomon’s power law and krupowski power law along with Hill’s 1948 yield criterions are implemented. The deep drawing setup used in the FEM code is modelled using a CAD tool by considering the modelling requirements from the literature. Strain path of 55x55mm are simulated. Punch forces and dome heights are evaluated for all the conditions. From this work the formability for different metal sheets is observed for different blank materials