Mapped infinite patches for the NURBS based boundary element analysis in geomechanics

Title: Mapped infinite patches for the NURBS based boundary element analysis in geomechanics
Creator: Beer, G.
Relation: Computers and Geotechnics Vol. 66, p. 66-74
Publisher Link: http://dx.doi.org/10.1016/j.compgeo.2015.01.012
Publisher: Pergamon Press
Resource Type: journal article
Date: 2015
Description: A formulation of infinite NURBS patches is presented which allows the modeling of infinite surfaces with the NURBS based boundary element method. Applications are the modeling of long tunnels and of the ground surface in geotechnical work. To achieve an infinite surface, special mapping functions are used for describing the geometry. For the description of the displacements either a constant variation is assumed simulating plane strain conditions or it is assumed that the displacements decay to zero at infinity. The theory and implementation details are presented. Test examples show that the proposed formulation works well for the simulation of long tunnels and of the ground surface. Finally a practical example of a tunnel intersection is presented.
Subject: tunneling; CAD; isogeometric analysis; NURBS patches
Identifier: http://hdl.handle.net/1959.13/1329645
Identifier: uon:26210
Identifier: ISSN:0266-352X
Language: eng
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