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Viscoplastic Finite Element Analysis Of Complex Geotechnical Problems

Last Update2011-03-08
TitleViscoplastic Finite Element Analysis Of Complex Geotechnical Problems
Author(s)Author #1
Author title:
Name: Waddah Salman Abdullah
Org: Associate Professor of Civil Engineering, Department of Civil Engineering, Jordan University of Science and Technology, Irbid, P.O. Box 3030, Jordan.

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Contact AuthorAuthor #1
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KeywordsViscoplasticity algorithm, Plasticity models, Associated flow rule, Non-associated flow rule, Foundations, Anchors
AbstractThe principles of elasto/viscoplastic finite element analysis were presented and explained, and the results and the analysis of some geotechnical problems were presented in this work. Plasticity models such as von-Mises, Tresca, Drucker-Prager and Mohr-Coulomb models with associated and non-associated flow rules were incorporated in the viscoplastic algorithm. The ultimate bearing capacity of a rigid surface footing on weightless clayey soil, Tresca material, predicted by the elasto/viscoplasticity approach agrees very well with that obtained by Prandtl exact solution (only 1% above Prandtl exact solution). Solution was also presented for complex problems with no available solution such as the problem of an anchor buried in sands (Mohr-Coulomb materials), where large zones within the soil domain are dominated by tensile stresses as well as sharp changes in shear stresses.
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