WRINKLING PREDICTION FOR MIXED-HARDENING METALS IN DEEP-DRAWING PROCESS | ||
The International Conference on Applied Mechanics and Mechanical Engineering | ||
Article 131, Volume 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., May 2008, Pages 203-214 PDF (351.78 K) | ||
Document Type: Original Article | ||
DOI: 10.21608/amme.2008.39794 | ||
Authors | ||
WIRATKASEM K.1; HARNCHOOWONG S.2 | ||
1Graduate student, Dpt. of Mechanical Engineering, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand. | ||
2Professor, Dpt. of Mechanical Engineering, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand. | ||
Abstract | ||
ABSTRACT Wrinkling in deep-drawing process was analyzed as the form of short-wavelength shallow buckling modes based on the Donnell-Mushtari-Vlasov shell theory. The local analysis considered the current deformed state of a sheet element in a doubly-curved, biaxial plane stress state. The yield criterion for mixed-hardening metal used J2 yield criterion for isotropic metal and Hosford’s yield criterion for anisotropic metal. The effect of back stresses on wrinkling limit curves was investigated numerically. | ||
Keywords | ||
wrinkling; Mixed-hardening; Bifurcation | ||
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