Prediction and elimination of springback in straight flanging using computer aided design methods Part 1. Experimental investigations

Livatyali H., Altan T.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, vol.117, pp.262-268, 2001 (SCI-Expanded) identifier identifier


A computer aided design method for straight flanging using finite element method is presented. The predictions have been validated with some laboratory experiments, and this method was applied on a specific type of flanging in which the edge is coined at the end of the operation. The experiments included die corner radius, punch-die clearance, punch nose radius, pad force and material type as the main variables. Some selected cases from the experiments were simulated using two commercial finite element programs: DEFORM (TM) and ABAQUS (TM), and the results were compared with the experiments and the sources of error were discussed. Next, flanging with coining was investigated as a method to eliminate springback and to improve part quality.