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| Numerical simulation of development of dynamic strain localization and size effect |
| Revised:October 18, 2000 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20024104 |
| KeyWord:localization,inclination angle of shear band,size effect,strain\|softening,Fast Lagrangian Analysis of Continua,width of specimen |
| Wang Xuebin 1 Pan Yishan 1 2 Sheng Qian 3 Ding Xiuli 3 |
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| Abstract: |
| FLAC\|3D is used to model progressive development of shear bands, the influence of dilation angle on the inclination angle of shear band and the effect of width of the specimen on patterns of localized bands in strain\|softening materials etc. Using FISH embedded in standard code, a function is written so that the evolution of localization is clearly apparent from 3 dimensional curved figures. With the increment of time steps, two isolated strain fields propagate towards each other. By certain time steps, the two fields meet and interact, and in the last the networks of shear bands are developed. Whether the strong end constraint or not, the inclination angle is close to Roscoe solution. Both the width of shear band and the peak strength of compressive stress in the center of upper end of specimen increase with the width of specimen. Larger width of specimen leads to curved shear band and the compressive stress\|time steps (or axial strain) curves in elastic stage is not dependent on the width of specimen. |
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