Use of stochastic XFEM in the investigation of heterogeneity effects on the tensile strength of intermediate geotechnical materials
AP Dyson, Z Tang, A Tolooiyan - Finite Elements in Analysis and Design, 2018 - Elsevier
The numerical simulation of an Unconfined Expansion Test (UET) is presented with tensile
strength fracture criteria assigned by stochastic methods to take into account material
heterogeneity. Tests are performed by producing radial cavity expansion models of thinly
sliced cylindrical specimens. The introduction of element-wise allocation of fracture
parameters generates instances of specimen failure without the requirement of predefined
fracture zones, permitting discontinuities to form naturally within zones containing weak …
strength fracture criteria assigned by stochastic methods to take into account material
heterogeneity. Tests are performed by producing radial cavity expansion models of thinly
sliced cylindrical specimens. The introduction of element-wise allocation of fracture
parameters generates instances of specimen failure without the requirement of predefined
fracture zones, permitting discontinuities to form naturally within zones containing weak …
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