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

  • Publication Type: Article / Article
  • Volume: 117
  • Publication Date: 2001
  • Doi Number: 10.1016/s0924-0136(01)01164-5
  • Journal Name: JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.262-268
  • Keywords: sheet metal bending, flanging, hemming, springback, FEM, CAD
  • Yıldız Technical University Affiliated: No

Abstract

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.