Contribution a Letude du Plissement en Emboutissa Ge (Contribution to the Study of Wrinkling in Metal Stamping)

摘要

Experimental results obtained by a Moire fringe pattern method applied to eight kinds of sheet ranging from classical deep drawing steel to high strength steel are described. The kinematics of wrinkle development is recorded for each sample of metal. A computer solution of the Yoshida buckling test is presented. It is based on the finite element method and produces a complete parameter investigation. A large displacement formulation with shell elements shows that wrinkling is mainly sheet thickness dependent, yield stress dependent, and anisotropic rate dependent.