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International Journal for Multiscale Computational Engineering
IF: 1.016 5-Year IF: 1.194 SJR: 0.452 SNIP: 0.68 CiteScore™: 1.18

ISSN Print: 1543-1649
ISSN Online: 1940-4352

International Journal for Multiscale Computational Engineering

DOI: 10.1615/IntJMultCompEng.v1.i4.50
14 pages

A Multi-Time-Scale Strategy for Multiphysics Problems: Application to Poroelasticity

David Dureisseix
Laboratoire de Mécanique et Génie Civil (LMGC), Laboratoire de Micromécanique et d'lntégrité des Structures (MIST), IRSN DPAM, CNRS UMR 5508, University Montpellier 2, F-34095 Montpellier CEDEX 5, France
Pierre Ladeveze
University Paris VI
David Neron
LMT-Cachan (ENS Cachan / CNRS / University Paris 6), 61, avenue du President Wilson, F-94235 Cachan CEDEX, France
Bernhard Schrefler
Department of Ingegneria Civile, Edile e Strutturale e Trasporti University of Padua, Via Marzolo 9, 35131 Padua, Italy

ABSTRACT

Usually, multiphysics phenomena and coupled-field problems lead to computationally intensive structural analysis. Strategies to keep these problems computationally affordable are of special interest. For coupled fluid-structure problems, for instance, partitioned procedures and staggered algorithms are often preferable to direct analysis.
In a previous article, a new strategy derived from the LArge Time INcrement (LATIN) method was described. This strategy was applied to the consolidation of saturated porous soils, which is a highly coupled fluid-solid problem. The feasibility of the method and the comparison of its performance with that of a standard partitioning scheme (the so-called ISPP method) was presented.
Here, we go one step further and use the LATIN method to take into account the different time scales that usually arise from the different physics. We propose a multi-time-scale strategy, which improves the existing method.