1. Ranko Radonjic, 2. Mathias Liewald, University of Stuttgart, Institute for Metal Forming Technology , Germany
3. Fei Han, University of Stuttgart, Institute for Metal Forming Technology , Germany
Deep drawing of sheet metal components having complex geometry leads to increased tendency on cracks and wrinkle formation as well as large elastic recovery after unloading. Objecting the goal of increasing part dimension and surface quality by adjusting the local blank holder stiffness, simulative and experimental investigations for a car fender geometry in this paper were accomplished. The blank holder in this case consists of a cover plate which is supported by numerous appropriate supporting cones made of steel. Deep drawing process was simulated by using LS-Dyna code subsequently. Stiffness of the blank holder plate as well as pressure distribution during deep drawing was optimized by variation of compression elasticity and order of the supporting cones surrounding deep drawing out line of tool. Simulation and experimental results showed that wrinkles of the second order, crack tendency as well as elastic recovery in deep drawing process can be significantly reduced.
Ključne reči :
Tematska oblast:
Production and Computer-Aided Technologies
Datum:
02.03.2015.
