Sheet Necking-II. Time-Independent Behavior
- 731 Downloads
Various factors affecting the prediction of limit strains in biaxially-stretched sheets are studied. Time-independent material behavior is assumed, and both the flow theory of plasticity as well as a finite-strain version of deformation theory are considered. A localization-band bifurcation analysis is first carried out. The influence of geometric imperfections is then analyzed using the long-wavelength approximation treated in Part I. We also discuss the predicted forming limit curves and comment on their relation to published experimental data. The main emphasis in this Part, however, is on comparisons between the corresponding predictions of flow theory and deformation theory.
KeywordsDeformation Theory Bifurcation Analysis Limit Strain Flow Theory Localize Necking
Unable to display preview. Download preview PDF.
- M. Azrin and W. A. Backofen, Metall. Trans., 1 (1970), 2857.Google Scholar
- J. W. Hutchinson, Numerical Solution of Nonlinear Structural Problems (ed. R. F. Hartung) ASME (1973), 17.Google Scholar
- R. Hill, Proc. R. Soc. Lond. A, 314 (1970), 457. 149Google Scholar
- J. W. Hutchinson and W. T. Koiter, Appl. Mech. Rev., 23 (1970), 1353.Google Scholar
- S. S. Hecker, Sheet Metal Ind., (1975), 671.Google Scholar