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Use of stochastic XFEM in the investigation of heterogeneity effects on the tensile strength of intermediate geotechnical materials

Citation

Dyson, AP and Tang, Z and Tolooiyan, A, Use of stochastic XFEM in the investigation of heterogeneity effects on the tensile strength of intermediate geotechnical materials, Finite Elements in Analysis and Design, 145 pp. 1-9. ISSN 0168-874X (2018) [Refereed Article]


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DOI: doi:10.1016/j.finel.2018.03.003

Abstract

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 parameters. The parallel application of an in-house Python scripts and eXtended Finite Element Method (XFEM) facilitates the investigation of heterogeneity effects on the tensile strength of intermediate geotechnical materials.

Item Details

Item Type:Refereed Article
Keywords:intermediate geotechnical material, fracture mechanics, stochastic methods, extended finite element method, unconfined expansion test
Research Division:Engineering
Research Group:Civil Engineering
Research Field:Civil Geotechnical Engineering
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Engineering
UTAS Author:Tolooiyan, A (Dr Ali Tolooiyan)
ID Code:129431
Year Published:2018
Deposited By:Engineering
Deposited On:2018-11-29
Last Modified:2018-12-07
Downloads:8 View Download Statistics

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