Structural bifurcation for ductile necking localization

Shigenobu Okazawa

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Structural bifurcation for ductile necking localization

机译：延性颈缩定位的结构分叉

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摘要

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.

机译：颈缩定位是韧性固体中常见的不稳定行为。本文介绍了统一的颈缩定位机制。在描述一维不稳定性问题后，制定了一般的材料和结构不稳定性准则，并通过非线性有限元分析对该公式进行了验证。颈缩局限性的触发是结构分叉，从均匀变形状态到最终局域性的行为就在断裂之前是连续的结构不稳定性。

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来源
《International journal of non-linear mechanics》 |2010年第1期|35-41|共7页
作者
Shigenobu Okazawa;
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作者单位

Department of Social and Environmental Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527, Japan;

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正文语种 eng
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关键词
stability; bifurcation; necking localization; plasticity; non-linear finite element method; ductile solid;

机译：稳定性;分叉缩颈定位可塑性;非线性有限元法;延性固体;

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机译：延性颈颈部定位的结构分叉

Structural bifurcation for ductile necking localization

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