Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

XFEM, strong discontinuities and second-order work in shear band modeling of saturated porous media

Mikaeili, Ehsan and Schrefler, Bernhard 2018. XFEM, strong discontinuities and second-order work in shear band modeling of saturated porous media. Acta Geotechnica 13 (6) , pp. 1249-1264. 10.1007/s11440-018-0734-6

Full text not available from this repository.

Abstract

We investigate shear band initiation and propagation in fully saturated porous media by means of a combination of strong discontinuities (discontinuities in the displacement field) and XFEM. As a constitutive behavior of the solid phase, a Drucker–Prager model is used within a framework of non-associated plasticity to account for dilation of the sample. Strong discontinuities circumvent the difficulties which appear when trying to model shear band formation in the context of classical nonlinear continuum mechanics and when trying to resolve them with classical numerical methods like the finite element method. XFEM, on the other hand, is well suited to deal with problems where a discontinuity propagates, without the need of remeshing. The numerical results are confirmed by the application of Hill’s second-order work criterion which allows to evaluate the material point instability not only locally but also for the whole domain.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: Springer Verlag (Germany)
ISSN: 1861-1125
Date of Acceptance: 9 October 2018
Last Modified: 17 May 2019 09:01
URI: http://orca.cf.ac.uk/id/eprint/122103

Actions (repository staff only)

Edit Item Edit Item