Wrinkling Analysis in Shrink Flanging.

Presents an energy approach to predict the onset of wrinkling during a shrink flanging operation. Establishment of curved sheet model to obtain critical buckling stress in terms of stress state, geometry properties and material properties; Increased sensitivity of wave number on plan view radius (PVR) with increased PVR; Influence of PVR, sheet thickness and material work-hardening on critical flange length.