The Effect of Blankholder on Flange Plastic Wrinkling of Laminated Circular Plates in Deep Drawing Process
Publish Year: 1388
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICME10_165
تاریخ نمایه سازی: 29 آبان 1388
Abstract:
Based on two-dimensional plane stress wrinkling model of a plastic annular plate with blankholder and a bifurcation functional from Hill's general theory of uniqueness for polar coordinate, the critical conditions for plastic wrinkling with blankholder of the flange of a two layered circular blanks during the deep-drawing process are obtained analyticaly. In order to obtain critical conditions for onset of wrinkling, Tresca yield criterion alongwith perfectly plastic manner of material is considered. To have a closed-form solution, deformational theory in plasticity is proposed. Finally from the proposed solution the critical wave numbers and the limitation of drawing for the laminated Steel-Aluminum plate is investigated and the effect of blank holder and also change of it is discussed in detail.
Keywords:
Plastic wrinkling–Bifurcational Functional–Laminated plates–Tresca yield criterion–Blankholder
Authors
Farzad Moayyedian
Ph.D. Student, Faculty of Mechanical Engineering, Ferdowsi University of Mashhad
Mehran Kadkhodayan
Associate Professor, Faculty of Mechanical Engineering, Ferdowsi University of Mashhad
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