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Numerical modelling of a field soil desiccation test using a cohesive fracture model with Voronoi tessellations
Abstract 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.
Numerical modelling of a field soil desiccation test using a cohesive fracture model with Voronoi tessellations
Abstract 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.
Numerical modelling of a field soil desiccation test using a cohesive fracture model with Voronoi tessellations
Gui, Y. L. (author) / Hu, W. (author) / Zhao, Z. Y. (author) / Zhu, X. (author)
Acta Geotechnica ; 13 ; 87-102
2017-05-30
16 pages
Article (Journal)
Electronic Resource
English
Cohesive fracture model , Elastic–plastic-fracture model , Fracture energy , Numerical modelling , Soil desiccation test Engineering , Geoengineering, Foundations, Hydraulics , Continuum Mechanics and Mechanics of Materials , Geotechnical Engineering & Applied Earth Sciences , Soil Science & Conservation , Soft and Granular Matter, Complex Fluids and Microfluidics , Structural Mechanics
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