[HTML][HTML] Investigation of three sophisticated constitutive soil models: From numerical formulations to element tests and the analysis of vibratory pile driving tests

J Machaček, P Staubach, M Tafili, H Zachert… - Computers and …, 2021 - Elsevier
The performance of three advanced constitutive models has been evaluated based on
element tests and on a comparative study on the simulation of vibratory pile driving tests in …

A high-cycle accumulation model for clay and its application to monopile foundations

P Staubach, J Machaček, M Tafili, T Wichtmann - Acta Geotechnica, 2022 - Springer
A high-cycle accumulation (HCA) model predicting the accumulation of permanent strain or
excess pore water pressure in clay under a large number of load cycles is presented. Data …

Inspection of four advanced constitutive models for fine-grained soils under monotonic and cyclic loading

J Duque, M Tafili, G Seidalinov, D Mašín, W Fuentes - Acta Geotechnica, 2022 - Springer
A wide range of geotechnical structures founded in fine-grained soils are subjected to
complex cyclic loading scenarios. The prediction of their behavior has motivated the …

On the AVISA model for clay–Recommendations for calibration and verification based on the back analysis of a piled raft

M Tafili, A Ganal, T Wichtmann, O Reul - Computers and Geotechnics, 2023 - Elsevier
This paper provides a manual for the thorough calibration of material parameters of the
anisotropic visco ISA (AVISA) model and discusses some of the pitfalls that can arise when …

A simple hypoplastic model with loading surface accounting for viscous and fabric effects of clays

M Tafili, T Triantafyllidis - International Journal for Numerical …, 2020 - Wiley Online Library
This paper presents a simple hypoplastic model capturing mostly all salient features of clays:
rate dependency, time dependency and inherent and induced anisotropy without being …

Comparison of two small-strain concepts: ISA and intergranular strain applied to barodesy

M Tafili, G Medicus, M Bode, W Fellin - Acta Geotechnica, 2022 - Springer
The intergranular strain concept (IGS) and intergranular strain anisotropy formulation (ISA)
are state of the art extensions to describe small-strain effects. The main conceptional …

Mechanisms of creep in shale from nanoscale to specimen scale

Q Yin, Y Liu, RI Borja - Computers and Geotechnics, 2021 - Elsevier
Creep in shale is a multiscale deformation process across both space and time. In this
paper, we propose a scale-bridging technique linking creep phenomena in shale from …

[HTML][HTML] A simple hydrodynamic model for clay

M Wiebicke, I Einav - Journal of the Mechanics and Physics of Solids, 2024 - Elsevier
Laboratory description of clay normally distinguishes the scale of atoms from the scale of
clay particles and aggregates. Contemporary constitutive models for clay tend to ignore this …

Undrained creep behavior of a compacted clay under low confining pressure

Q Pei, W Zou, Z Han, X Wang, K Fan - Mechanics of Time-Dependent …, 2023 - Springer
An experimental investigation is made for evaluating the long-term creep behavior of a
compacted clay under low confining pressure (from 12 to 50 kPa). Specimens compacted at …

Predictive abilities of constitutive models for clay under monotonic and cyclic loading: element tests and centrifuge experiments

M Tafili, P Staubach, J Machaček, H Zachert… - …, 2024 - icevirtuallibrary.com
A critical investigation of three constitutive models for clay by means of analyses of a
sophisticated laboratory testing program and of centrifuge tests on monopiles in clay …