Abstract

Wrinkling is a defect occurring in the flange part of the blank during the metal forming operation. There is not much previous work related with the wrinkling of nonaxisymmetric parts. In this work finite element method is used to obtain the wrinkled behavior of nonaxisymmetric parts. Shell element with five degrees of freedom is formulated and used in the program. The developed nite element program can both be used with and without blank holder application. The permanent deformed shape after wrinkling is also obtained. The theoretical results are compared with the experimental values.

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