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首页> 外文期刊>International Journal of Solids and Structures >3D network modelling of fracture processes in fibre-reinforced geomaterials
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3D network modelling of fracture processes in fibre-reinforced geomaterials

机译：3D纤维增强岩土材料骨折过程网络建模

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摘要

The width of fracture process zones in geomaterials is commonly assumed to depend on the type of heterogeneity of the material. Still, very few techniques exist, which link the type of heterogeneity to the width of the fracture process zone. Here, fracture processes in geomaterials are numerically investigated with structural network approaches, whereby the heterogeneity in the form of large aggregates and low volume fibres is modelled geometrically as poly-dispersed ellipsoids and mono-dispersed line segments, respectively. The influence of aggregates, fibres and combinations of both on fracture processes in direct tensile tests of periodic cells is investigated. For all studied heterogeneities, the fracture process zone localises at the start of the softening regime into a rough fracture. For aggregates, the width of the fracture process zone is greater than for analyses without aggregates. Fibres also increase the initial width of the fracture process zone and, in addition, result in a widening of this zone due to fibre pull out.
机译：通常假设土工材料中断裂过程区域的宽度依赖于材料的异质性的类型。仍然，存在很少的技术，这将异质性与裂缝处理区的宽度联系起来。这里，用结构网络方法进行数值研究了地质材料的断裂过程，其中大聚集体和低体积纤维形式的异质性分别以聚分散的椭圆形和单分散的线段来建模。研究了聚集体，纤维和两种骨折过程中的骨折过程中的周期性细胞直接拉伸试验的影响。对于所有研究的异质性，裂缝过程区域在软化制度开始时定位成粗糙的骨折。对于聚集体，裂缝过程区域的宽度大于没有聚集体的分析。纤维还增加了骨折处理区的初始宽度，并且另外导致由于纤维拉出而导致该区域的加宽。

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