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Earing sheet metal drawing.
Earing is defined as formation of waviness on uppermost portion of deep drawn cup.
By comparison with the actual sheet texture those textural components which most affect earing behaviour are identified.
The other major factor causing the punch to draw the sheet metal and not cut it is the amount of clearance.
Earing is defined as formation of waviness on uppermost portion of deep drawn cup.
Earing is one of the major defects observed during deep drawing process due to anisotropic nature of sheet metal.
Clearance in cutting operations is relatively small usually 3 to 8 of sheet metal thickness.