NUMERICAL ANALYSIS FOR MATERIAL BIFURCATION
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摘要: 通过与解析解法相对比，本文说明了分析材料分叉时采有数值法的特点．文中揭示了在单向和弱双向加载条件下材料分叉（平面剪切带和表面皱曲）的一些特征．单向拉伸的实验表明，所计算的临界值是合理的．Abstract: By comparing with the results given by analytic method,the advantages of employing numerical method to analyse material bifurcations are displayed in this paper.Under the loading conditions of uniaxial and slightly biaxial tension,the characteristics of material bifurcations(plane shear banding and surface wrinkling)are demonstrated. Uniaxial tension testings justify that the critical stresses given by calculations are reasonably fair.
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Key words:
- material bifurcation /
- shear band /
- surface wrinkling /
- necking /
- void
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