Explicit stress integration with reduced drift for Barcelona Basic Model

W. T. Sołowski*, D. Sheng, S. W. Sloan

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

2 Citations (Scopus)

Abstract

The paper studies the effectiveness of a drift reduction method in integrating unsaturated soil models. The drift reduction is based on the NI CE (Next Increment Corrects Error) method. The NI CE method can be applied to any explicit stress integration method based on Runge-Kutta method. The performance of the stress integration enhanced by the NICE scheme is demonstrated with the Barcelona Basic Model. Numerical studies in this paper involve the integration of the Barcelona Basic Model with different numbers of strain increments and different sets of model parameters and initial conditions. The improved algorithm does not require any significant computations, thus the drift reduction is virtually accomplished without significant cost. The reduction in the yield surface drift appears to be rather significant, suggesting that under normal circumstances no additional drift correction method is required.

Original languageEnglish
Title of host publicationUnsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils
Pages1075-1080
Number of pages6
Volume2
Publication statusPublished - 2011
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Unsaturated Soils - Barcelona, Spain
Duration: 6 Sep 20108 Sep 2010
Conference number: 5

Conference

ConferenceInternational Conference on Unsaturated Soils
Abbreviated titleUNSAT
CountrySpain
CityBarcelona
Period06/09/201008/09/2010

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