Shear Band Localization in Frictional Geomaterials: Basic Modelling and Adaptive Computations

机译：摩擦土工材料中的剪切带局部化：基本建模和自适应计算

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In saturated frictional geomaterials, shear bands occur as a result of local concentrations of plastic strains in small bands of finite width. Since in practice as well as in numerical simulations both the location of the onset and the direction of shear bands are generally unknown, time- and space-adaptive methods are an excellent tool to detect and to solve shear band problems. In the present contribution, the ill-posedness of the numerical computation of shear band phenomena is overcome by taking into account both the natural viscosity of the pore-fluid and the viscoplastic behaviour of the solid matrix.

机译：在饱和摩擦土工材料中，剪切带是由于塑性应变局部集中在有限宽度的小带中而产生的。由于在实践中以及在数值模拟中，剪切带的开始位置和方向通常都是未知的，因此时间和空间自适应方法是检测和解决剪切带问题的绝佳工具。在本发明中，通过考虑孔隙流体的自然粘度和固体基质的粘塑性行为，克服了剪切带现象数值计算的不适定性。

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《IUYAM Symposium on Theoretical and Numerical Methods in Continuum Mechanics of Porous Materials, Sep 5-10, 1999, Stuttgart, Germany》|1999年|p.259-264|共6页
会议地点 Stuttgart(DE)
作者
W. Ehlers; P. Ellsiepen;
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作者单位

Institute of Applied Mechanics (Civil Engineering), University of Stuttgart, D-70 550 Stuttgart, Germany;

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会议组织
原文格式 PDF
正文语种 eng
中图分类一般工业技术;
关键词
frictional geomaterials; pore-fluids; localization phenomena; regular-ization; time and space adaptivity;

机译：摩擦土工材料；孔隙流体本地化现象；正则化时空适应性;

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2. Shear banding in geomaterials under extensional plane strain conditions: Physical and analytical model [J] . Triantafyllidis T., R?chter L., Niemunis A., Acta Geotechnica: An International journal for Geoengineering . 2011,第2期

机译：拉伸平面应变条件下土工材料中的剪切带：物理和分析模型
3. Shear banding in geomaterials under extensional plane strain conditions: Physical and analytical model [J] . Th. Triantafyllidis, L. Röchter, A. Niemunis, Acta Geotechnica . 2011,第2期

机译：拉伸平面应变条件下土工材料中的剪切带：物理和分析模型
4. Shear band localization in frictional geomaterials: basic modelling and adaptive computations [C] . W. Ehlers, P. Ellsiepen IUTAM symposium on theoretical and numerical methods in continuum mechanics of porous materials . 2001

机译：摩擦造型剪切带本地化：基本建模和自适应计算
5. Modeling variable friction and slip weakening of localized geomaterials using an embedded strong discontinuity finite element. [D] . Foster, Craig D. 2006

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Shear Band Localization in Frictional Geomaterials: Basic Modelling and Adaptive Computations

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