Effects of product shape and a planar-anisotropy on a square shell drawability were studied, using commercially pure aluminum sheet. Two phenomena were mainly considered to affect a forming limit: (a) the prevention of crack initiation at the corner of a punch by adjacent straight punch profile regions, (b) the metal flow in the flange region from the corner to the straight side, the “Strain Relief Effect,” which serves to decrease the deformation at the corner.

Issue Section:
Research Papers
Topics:
Aluminum, Shells, Corners (Structural elements), Anisotropy, Deformation, Flanges, Flow (Dynamics), Forming limit diagrams, Fracture (Materials), Metals, Shapes
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Copyright © 1987
 by ASME
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