Axisymmetric Simulations of Cone Penetration in Saturated Clay
The authors appreciate the financial support of the National Science Foundation (Award CMMI-1300518) and the California Department of Water Resources (Contract 4600009751). Any opinions, findings, and conclusions, or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of either agency.
Journal of Geotechnical and Geoenvironmental Engineering
A direct axisymmetric cone-penetration model developed for use with a user-written implementation of the MIT-S1 constitutive model is presented. The penetration model uses a finite-difference program with an Arbitrary Lagrangian Eulerian algorithm that couples the program’s large-deformation Lagrangian formulation with user-written algorithms for rezoning and second-order Eulerian advection remapping. Numerical examples illustrate the performance of the remapping and advection algorithms and cone-penetration simulations. Cone penetration at a Boston blue clay site is simulated with the Mohr-Coulomb, modified Cam clay, and MIT-S1 constitutive models and compared with measured cone-penetration test profiles. Single-element simulations illustrate that the MIT-S1 constitutive model captures the significant undrained shear-strength anisotropy exhibited by Boston blue clay, whereas the modified Cam clay and Mohr-Coulomb models do not. Penetration simulations demonstrate the important effect of undrained shear-strength anisotropy on the cone tip resistance, as well as on stress and pore pressure fields around the cone tip and rod.
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Moug, D. M., Boulanger, R. W., DeJong, J. T., & Jaeger, R. A. (2019). Axisymmetric Simulations of Cone Penetration in Saturated Clay. Journal of Geotechnical and Geoenvironmental Engineering, 145(4), 04019008.