Structural bifurcation for ductile necking localization |
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| Authors: | Shigenobu Okazawa |
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| Institution: | Department of Social and Environmental Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527, Japan |
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| Abstract: | Necking localization is common unstable behavior in ductile solids. This paper describes the unified necking localization mechanism. After describing one-dimensional instability problem, general material and structural instability criteria are formulated and the formulation is validated by non-linear finite element analysis. The trigger of necking localization is structural bifurcation and the behavior from a uniformly deformed state to ultimate localization just before fracture is continuous structural instability. |
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| Keywords: | Stability Bifurcation Necking localization Plasticity Non-linear finite element method Ductile solid |
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