[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 …

On the automatic parameter calibration of a hypoplastic soil model

J Machaček, P Staubach, CEG Tavera, T Wichtmann… - Acta Geotechnica, 2022 - Springer
This paper presents an approach for the automatic parameter calibration (AC) of a
hypoplastic constitutive soil model. The calibration software developed in this work simplifies …

Monopile installation in clay and subsequent response to millions of lateral load cycles

P Staubach, L Tschirschky, J Machaček… - Computers and …, 2023 - Elsevier
The installation-induced changes in the state of clayey soils caused by pile driving
processes are investigated numerically. Hydro-mechanically coupled Coupled-Eulerian …

Numerical analysis on the mechanical response of grouted connection for pile-bucket foundation

L Li, H Liu, G Jiang, Z Liu, MH El Naggar, W Wu - Ocean Engineering, 2023 - Elsevier
As a new foundation type for offshore wind turbine (OWT), pile-bucket foundation, which
consists of a monopile and a bucket foundation, has good prospect in engineering …

Novel approach to apply existing constitutive soil models to the modelling of interfaces

P Staubach, J Machaček… - International Journal for …, 2022 - Wiley Online Library
A novel scheme to apply constitutive (continuum) soil models to the mechanical modelling of
soil‐structure interfaces is presented. Opposite to existing approaches, all normal stress …

[HTML][HTML] Impact of cyclic strain accumulation on the tilting behaviour of monopiles in sand: An assessment of the Miner's rule based on SANISAND-MS 3D FE …

H Liu, F Pisanò, HP Jostad, N Sivasithamparam - Ocean Engineering, 2022 - Elsevier
Offshore monopiles accumulate permanent tilt under long-lasting cyclic environmental
loads. Accurate prediction of monopile tilt is key to assessing their serviceability, and …

Long-term response of piles to cyclic lateral loading following vibratory and impact driving in water-saturated sand

P Staubach, J Machaček, B Bienen… - Journal of Geotechnical …, 2022 - ascelibrary.org
The influence of the pile installation by vibratory or impact driving on the response to
subsequent cyclic lateral loading, as faced in the offshore environment, is investigated …

Mortar contact discretisation methods incorporating interface models based on Hypoplasticity and Sanisand: Application to vibratory pile driving

P Staubach, J Machaček, T Wichtmann - Computers and Geotechnics, 2022 - Elsevier
A segment-based mortar contact discretisation technique for the analysis of hydro-
mechanically coupled dynamic processes with quadratically interpolated finite elements and …

Large-deformation analysis of pile installation with subsequent lateral loading: Sanisand vs. Hypoplasticity

P Staubach, J Machaček, T Wichtmann - Soil Dynamics and Earthquake …, 2021 - Elsevier
The simulation of the installation of open-ended piles using a Coupled Eulerian-Lagrangian
method in conjunction with two sophisticated constitutive soil models, Sanisand and …