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Title: Modeling the hydro-mechanical responses of strip and circular punch loadings on water-saturated collapsible geomaterials

A stabilized enhanced strain finite element procedure for poromechanics is fully integrated with an elasto-plastic cap model to simulate the hydro-mechanical interactions of fluid-infiltrating porous rocks with associative and non-associative plastic flow. We present a quantitative analysis on how macroscopic plastic volumetric response caused by pore collapse and grain rearrangement affects the seepage of pore fluid, and vice versa. Results of finite element simulations imply that the dissipation of excess pore pressure may significantly affect the stress path and thus alter the volumetric plastic responses.
 [1] ;  [2] ;  [3]
  1. Columbia Univ., New York, NY (United States)
  2. Clemson Univ., SC (United States)
  3. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 1861-1125; PII: 276
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Acta Geotechnica
Additional Journal Information:
Journal Volume: 9; Journal Issue: 5; Journal ID: ISSN 1861-1125
Research Org:
Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
58 GEOSCIENCES bearing capacity; cap plasticity; excess pore pressure; hydro-mechanical coupling; poromechanics; stabilized procedure