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FROM:
Vishwanath Hegadekatte and Yahai Shi,
“Buckling of beverage cans under axial loading”, SIMULIA India Regional Users Meeting, 2011
ABSTRACT: Wrinkling is one of the major defects in sheet metal forming processes. It may become a serious obstacle to implementing forming process and assembling the parts, and may also play a significant role in the wear of the tool. Wrinkling is a local buckling phenomenon that results from compressive stresses (compressive instability) e.g., in the hoop direction for axisymmetric systems such as beverage cans. In the present work, we have studied the buckling of ideal (no imposed imperfections like dents) beverage cans under axial loading both by laboratory testing and finite element analysis. Our laboratory test showed that 2 out of 11 cans fail by sidewall buckling. We have developed finite element models to study the effect of a couple of manufacturing parameters on the buckling of beverage cans. Further we have studied the buckling of dented beverage cans under axial compression through both laboratory testing and finite element analysis using Abaqus and LS-Dyna. Our results show that Abaqus did not predict sidewall buckling during axial compression of beverage cans while LS-Dyna predicted buckling in a few cases
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