A stabilized computational nonlocal poromechanics model for dynamic analysis of saturated porous media

S Menon, X Song - International Journal for Numerical Methods …, 2021 - Wiley Online Library
In this article we formulate a stable computational nonlocal poromechanics model for
dynamic analysis of saturated porous media. As a novelty, the stabilization formulation …

A computational model for dynamic strain localization in unsaturated elasto‐viscoplastic soils

F Oka, B Shahbodagh, S Kimoto - International Journal for …, 2019 - Wiley Online Library
Strain localization has been the subject of extensive theoretical and numerical studies over
the last four decades. The static and dynamic strain localization in both dry and water …

A bounding surface viscoplasticity model for time-dependent behavior of soils including primary and tertiary creep

B Shahbodagh, TN Mac, GA Esgandani… - International Journal of …, 2020 - ascelibrary.org
A viscoplastic model is presented for creep and strain rate behavior of soils with particular
reference to capturing drained, undrained, primary, and tertiary creep. The model is …

Large deformation and failure analysis of river embankments subjected to seismic loading

B Shahbodagh, H Sadeghi, S Kimoto, F Oka - Acta Geotechnica, 2020 - Springer
A numerical model based on the theory of mixtures is proposed for the nonlinear large
deformation and failure analysis of river embankments subjected to large earthquakes. The …

Robust numerical implementation of a 3D rate‐dependent model for reservoir geomechanical simulations

G Isotton, P Teatini, M Ferronato… - … for Numerical and …, 2019 - Wiley Online Library
A 3D elasto‐plastic rate‐dependent model for rock mechanics is formulated and
implemented into a Finite Element (FE) numerical code. The model is based on the …

An edge-based smoothed point interpolation method for elasto-plastic coupled hydro-mechanical analysis of saturated porous media

O Ghaffaripour, A Khoshghalb, N Khalili - Computers and Geotechnics, 2017 - Elsevier
An edge-based smoothed point interpolation method is adopted for coupled hydro-
mechanical analysis of saturated porous media with elasto-plastic behaviour. A novel …

Effects of stress histories and drainage conditions on inception of strain localization in unsaturated soils

B Shahbodagh, D Perić, N Khalili - Computers and Geotechnics, 2023 - Elsevier
A diagnostic method to detect the inception of strain localization, which is based on the
singularity of a total acoustic tensor, was developed for variably saturated soils. The effective …

A viscoplastic subloading soil model for rate‐dependent cyclic anisotropic structured behaviour

JR Maranha, C Pereira, A Vieira - International Journal for …, 2016 - Wiley Online Library
This paper presents a new purely viscoplastic soil model based on the subloading surface
concept with a mobile centre of homothety, enabling the occurrence of viscoplastic strains …

[HTML][HTML] Constitutive modeling and analysis of geomaterials

F Oka - Soils and Foundations, 2023 - Elsevier
This is a review of the papers written by the author with co-researchers, which have been
published in Soils & Foundations and related publications. The contents of the papers are …

[图书][B] Computational multiphase geomechanics

F Oka, S Kimoto - 2021 - taylorfrancis.com
Numerical methods are very powerful tools for use in geotechnical engineering, particularly
in computational geotechnics. Interest is strong in the new field of multi-phase nature of …