A comparative study of stress integration methods for the Barcelona basic model

Title: A comparative study of stress integration methods for the Barcelona basic model
Creator: Sołowski, Wojciech T.; Hofmann, Matthias; Hofstetter, Günter; Sheng, Daichao; Sloan, Scott W.
Relation: Computers and Geotechnics Vol. 44, p. 22-33
Publisher Link: http://dx.doi.org/10.1016/j.compgeo.2012.03.007
Publisher: Pergamon Press
Resource Type: journal article
Date: 2012
Description: The paper compares the accuracy and stability of implicit and explicit stress integration schemes applied to the Barcelona Basic Model. In addition, the effect of the integration scheme on the convergence of Newton–Raphson algorithm is studied. By running a Newton–Raphson algorithm for a single stress point, the number of iterations required to reach convergence gives some insight on the convergence of the finite element solution at the global level. The explicit algorithms tested incorporate substepping with error control and are based on Runge–Kutta methods of different orders or on the Richardson extrapolation method. The implicit return-mapping algorithms follow the procedures of Simo and Hughes [1] and Hofmann [2].
Subject: unsaturated soil; elasto-plasticity; implicit stress integration; explicit stress integration; Barcelona Basic Model
Identifier: http://hdl.handle.net/1959.13/1061074
Identifier: uon:16872
Identifier: ISSN:0266-352X
Language: eng
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