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On liquid-saturated and empty granular elasto-plastic solid materials accounting for micropolar rotations

机译:在液态饱和和空颗粒状弹塑性固体材料上,核算用于微柱旋转的核算

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摘要

Depending on the boundary-value problem under consideration, granular solid materials (frictional materials), as for instance soil or concrete, exhibit more or less a strong tendency towards localization. When localization occurs, e.g. initiated by a singularity in the outer boundary conditions, the plastic deformations concentrate in small bands of finite width, so-called shear bands (de Borst, 1991 a; Schrefler et al., 1995). The mechanical reason of this behaviour results from the basic properties of frictional materials, where, in the brittle regime, the plastic dilatation yields local softening effects.
机译:根据所考虑的边值问题,颗粒状固体材料(摩擦材料),例如土壤或混凝土,或多或少地表现出对局部化的强烈趋势。当本地化发生时,例如通过外边界条件的奇点开始,塑性变形集中在有限宽度的小条带中,所谓的剪切带(De Borst,1991A; Schrefler等,1995)。这种行为的机械原因来自摩擦材料的基本性质,在脆性方案中,塑料扩张产生局部软化效果。

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