Onset and growth of wrinkles in thin square plates subjected to diagonal tension

A corner type constitutive equation is developed using the general quadratic anisotropic yield function. The wrinkling point of square plates subjected to diagonal tension was obtained by the bifurcation and Mindlin type plate theories, in conjunction with the finite element approximation. The growth of wrinkles was traced by a three-dimensional analysis in terms of an isoparametric shell element.

The numerical investigation was performed for the thin plates characterized by Hill's anisotropic yield function. The effects of such material characteristics as yield stress, hardening rate, orthotropy and normal anisotropy on the wrinkling limit and wrinkle height have been clarified.