Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published February 10, 2012 | public
Journal Article

Characterization of random fields and their impact on the mechanics of geosystems at multiple scales


The behavior of particulate media, such as sands, is encoded at the granular-scale and hence methods for upscaling such behavior across relevant scales of interest—from granular-scale (~1 mm) to field-scale (>1m)—are needed to attain a more accurate prediction of soil behavior. Multi-scale analysis is especially important under extreme conditions, such as strain localization, penetration, or liquefaction, where the classical constitutive description may no longer apply. In this paper, internally consistent probabilistic models for undrained shear strength and Young's modulus are developed at multiple scales, and incorporated into a simulation framework where refinement of the material description to finer scales is pursued only as necessary. This probabilistic simulation approach is then coupled with the finite element method. Numerical examples are presented to show how the performance of the geosystem is influenced by taking into account multi-scale random fields.

Additional Information

© 2010 John Wiley & Sons, Ltd. Received 30 July 2009; Revised 12 May 2010; Accepted 15 October 2010. Published online 30 December 2010. Support for this work is provided by NSF grant numbers CMMI 0726908 and CMMI 0727121. This support is gratefully appreciated. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.

Additional details

August 22, 2023
October 24, 2023