期刊
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
卷 35, 期 11, 页码 1278-1298出版社
WILEY-BLACKWELL
DOI: 10.1002/nag.958
关键词
strong discontinuity; slip plane; frictional soil; XFEM; penalty method
资金
- NSF [0653772]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0653772] Funding Source: National Science Foundation
This paper is concerned with developing a numerical tool for detecting instabilities in elasto-plastic solids (with an emphasis on soils) and inserting a discontinuity at these instabilities allowing the boundary value problem to proceed beyond these instabilities. This consists of implementing an algorithm for detection of strong discontinuities within a finite element (FE) framework. These discontinuities are then inserted into the FE problem through the use of a displacement field enrichment technique called the extended finite element method (XFEM). The newly formed discontinuities are governed by a Mohr-Coulomb frictional law that is enforced by a penalty method. This implementation within an FE framework is then tested on a compressive soil block and a soil slope where the discontinuity is inserted and grown according to the localization detection. Copyright (C) 2010 John Wiley & Sons, Ltd.
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