Numerical simulations and predictive models of undrained penetration in soft soils

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dc.contributorAubeny, Charles P.
dc.creatorShi, Han
dc.date.accessioned2005-11-01T15:45:42Z
dc.date.accessioned2017-04-07T19:50:27Z
dc.date.available2005-11-01T15:45:42Z
dc.date.available2017-04-07T19:50:27Z
dc.date.created2005-08
dc.date.issued2005-11-01
dc.description.abstractThere are two aspects in this study: cylinder penetrations and XBP (Expendable Bottom Penetrometer) interpretations. The cylinder studies firstly investigate the relationship between the soil resisting force and penetration depth by a series of rateindependent finite element analyses of pre-embedded penetration depths, and validate the results by upper and lower bound solutions from classical plasticity theory. Furthermore, strain rate effects are modeled by finite element simulations within a framework of rate-dependent plasticity. With all forces acting on the cylinder estimated, penetration depths are predicted from simple equations of motion for a single particle. Comparisons to experimental results show reasonable agreement between model predictions and measurements. The XBP studies follow the same methodology in investigating the soil shearing resistance as a function of penetration depth and velocity by finite element analyses. With the measurements of time decelerations during penetration of the XBP, sediment shear strength profile is inferred from a single particle kinetic model. The predictions compare favorably with experimental measurements by vane shear tests.
dc.identifier.urihttp://hdl.handle.net/1969.1/2555
dc.language.isoen_US
dc.publisherTexas A&M University
dc.subjectcylinder penetration
dc.subjectstrength characterization
dc.subjectstrain rate
dc.titleNumerical simulations and predictive models of undrained penetration in soft soils
dc.typeBook
dc.typeThesis

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