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首页> 外文期刊>Acta Geotechnica: An International journal for Geoengineering >Numerical modelling of a field soil desiccation test using a cohesive fracture model with Voronoi tessellations
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Numerical modelling of a field soil desiccation test using a cohesive fracture model with Voronoi tessellations

机译:voronoi曲面细分的粘性裂缝模型的现场土壤干燥试验的数值模型

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摘要

Numerical modelling of a field soil desiccation test is performed using a hybrid continuum-discrete element method with a mix-mode cohesive fracture model and Voronoi tessellation grain assemblages. The fracture model considers material strength and contact stiffness degradation in both normal and tangential directions of an interface. It is found that the model can reasonably reproduce the special features of the field soil desiccation, such as curling and sub-horizontal crack. In addition, three significant factors controlling field desiccation cracking, fracture energy, grain heterogeneity and grain size are identified.
机译:使用具有混合模式内聚裂缝模型和voronoi曲面细胞组装的混合连续型离散元件进行现场土壤干燥试验的数值模拟。 裂缝模型在界面的正常和切向方向上考虑了材料强度和接触刚度劣化。 结果发现,该模型可以合理地再现现场土壤干燥的特征,例如卷曲和亚水平裂缝。 另外,鉴定了控制场干燥裂缝,断裂能,晶粒异质性和晶粒尺寸的三个重要因素。

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