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首页> 外文期刊>Acta Mechanica >Analysis of discontinuous bifurcations for elasto-plastic geomaterials with effect of damage
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Analysis of discontinuous bifurcations for elasto-plastic geomaterials with effect of damage

机译：损伤作用下弹塑性土工材料的不连续分叉分析

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The failure process of geomaterials can be regarded as the one in which the undamaged part of the material is transformed into the damaged part gradually. Thus by considering geomaterials as the mixture of the undamaged and damaged parts. a formulation of discontinuous bifurcation including the damage effect is presented. and the hardening modulus corresponding to the onset of discontinuous bifurcation is given in an explicit form. The damaged part is assumed not being able to support shear loading but having certain capacity to bear hydrostatic pressure as the hydrostatic pressure can make the micro-cracks closed to some extent, As a result. the properties of discontinuous bifurcation are much dependent on damage and the capacity of bearing hydrostatic pressure of the damaged part. Generally, damage may induce an earlier onset of discontinuous bifurcation and lead to instability of geomaterials. [References: 26]
机译：土工材料的破坏过程可以看作是材料的未破坏部分逐渐转变为受损部分的过程。因此，通过将土工材料视为未损坏和损坏部分的混合物。提出了不连续分叉的公式，包括破坏效应。并且以明确的形式给出与不连续分叉的开始相对应的硬化模量。假定损坏的部分不能承受剪切载荷，而是具有一定的承受静水压力的能力，因为静水压力可使微裂纹在某种程度上闭合。不连续分叉的特性在很大程度上取决于损坏以及损坏部位承受静水压力的能力。通常，损坏可能会导致不连续分叉的提前发生并导致土工材料的不稳定性。 [参考：26]

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