Blank-Holder Force Optimization for Improving the Stability of Deep Drawing
Journal Title: RECENT - Year 2009, Vol 10, Issue 25
Abstract
The explicit finite element method is utilized to simulate the sheet-metal deep drawing process of a flanged cup. The problem is time scaled for more computational efficiency of the simulation. The results of the simulation are compared with experimental results as well as with the results of another implicit finite element simulation for validation. A lot of explicit finite element simulations are used to determine the technological window for the blank holder force and the blank thickness. Investigating the range of blank thickness deviation, it appears to be good choice for objective function corresponding to the process stability. An optimization problem is formulated for searching a stable and reliable forming process with constraints for wrinkling and fracture. The optimal solution is found with high efficiency by an automated computer procedure.
Authors and Affiliations
Ivelin IVANOV, Svetlana PASKALEVA
Keywords
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