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Parametric stress distribution in 3D printed polymer quadric-surfaced sludge digesters (2018)
Presentation / Conference
Ramroop, N., Tota-Maharaj, K., & Anoyatis, G. (2018, June). Parametric stress distribution in 3D printed polymer quadric-surfaced sludge digesters. Paper presented at 5th International Association of Hydro-Environment Engineering and Research (IAHR) Europe Congress-New Challenges in Hydraulic Research and Engineering

The stresses developed in the shell of the quadric surfaced sludge digester, vary according to the height-to-diameter ratio. The optimum dimensions of a 3D printed polymer digester due to hydrostatic loading is evaluated through finite element analys... Read More about Parametric stress distribution in 3D printed polymer quadric-surfaced sludge digesters.

Kinematic Winkler modulus for laterally-loaded piles (2017)
Journal Article
Anoyatis, G., & Lemnitzer, A. (2017). Kinematic Winkler modulus for laterally-loaded piles. Soils and Foundations, 57(3), 453-471. https://doi.org/10.1016/j.sandf.2017.05.011

© 2017 Beam-on-dynamic-Winkler-foundation models are widely used to study kinematic soil-pile interaction. Winkler models consider the pile as a flexural beam and simulate the restraining and dissipative action of soil through independent springs and... Read More about Kinematic Winkler modulus for laterally-loaded piles.

Dynamic pile impedances for fixed-tip piles (2017)
Journal Article
Anoyatis, G., Laora, R. D., & Lemnitzer, A. (2017). Dynamic pile impedances for fixed-tip piles. Soil Dynamics and Earthquake Engineering, 97, 454-467. https://doi.org/10.1016/j.soildyn.2017.03.025

© 2017 Elsevier Ltd The behavior of a laterally loaded pile with fixed-tip boundary condition (i.e., displacement and rotation, are perfectly restrained) is evaluated using a recently proposed, improved Tajimi-type model. The model performance in bot... Read More about Dynamic pile impedances for fixed-tip piles.

An analytical model to predict soil reaction induced by harmonically loaded piles (2017)
Presentation / Conference
Anoyatis, G., Mylonakis, G., & Lemnitzer, A. (2017, January). An analytical model to predict soil reaction induced by harmonically loaded piles. Paper presented at 16th World Conference on Earthquake Engineering, 16WCEE 2017

The theoretical representation of the dynamic horizontal soil reaction to a laterally oscillating pile using an approximate 3D continuum modelling is investigated. The governing elastodynamic equations are reduced by setting the vertical normal stres... Read More about An analytical model to predict soil reaction induced by harmonically loaded piles.

Dynamic pile impedances for laterally–loaded piles using improved Tajimi and Winkler formulations (2016)
Journal Article
Anoyatis, G., & Lemnitzer, A. (2017). Dynamic pile impedances for laterally–loaded piles using improved Tajimi and Winkler formulations. Soil Dynamics and Earthquake Engineering, 92, 279-297. https://doi.org/10.1016/j.soildyn.2016.09.020

© 2016 Elsevier Ltd Lateral dynamic soil–pile interaction is investigated through an improved Tajimi type solution. The soil is treated as a continuum with hysteretic material damping as previously proposed by the authors, and the pile is modelled as... Read More about Dynamic pile impedances for laterally–loaded piles using improved Tajimi and Winkler formulations.

Soil reaction to lateral harmonic pile motion (2016)
Journal Article
Anoyatis, G., Mylonakis, G., & Lemnitzer, A. (2016). Soil reaction to lateral harmonic pile motion. Soil Dynamics and Earthquake Engineering, 87, 164-179. https://doi.org/10.1016/j.soildyn.2016.05.004

© 2016. The analytical representation of dynamic soil reaction to a laterally-loaded pile using 3D continuum modeling is revisited. The governing elastodynamic Navier equations are simplified by setting the dynamic vertical normal stresses in the soi... Read More about Soil reaction to lateral harmonic pile motion.

Axial kinematic response of end-bearing piles to P waves (2013)
Journal Article
Anoyatis, G., Di Laora, R., & Mylonakis, G. (2013). Axial kinematic response of end-bearing piles to P waves. International Journal for Numerical and Analytical Methods in Geomechanics, 37(17), 2877-2896. https://doi.org/10.1002/nag.2166

Kinematic pile-soil interaction under vertically impinging seismic P waves is revisited through a novel continuum elastodynamic solution of the Tajimi type. The proposed model simulates the steady-state kinematic response of a cylindrical end-bearing... Read More about Axial kinematic response of end-bearing piles to P waves.

Kinematic response of single piles for different boundary conditions: Analytical solutions and normalization schemes (2012)
Journal Article
Anoyatis, G., Di Laora, R., Mandolini, A., & Mylonakis, G. (2013). Kinematic response of single piles for different boundary conditions: Analytical solutions and normalization schemes. Soil Dynamics and Earthquake Engineering, 44, 183-195. https://doi.org/10.1016/j.soildyn.2012.09.011

Kinematic pile-soil interaction is investigated analytically through a Beam-on-Dynamic-Winkler-Foundation model. A cylindrical vertical pile in a homogeneous stratum, excited by vertically-propagating harmonic shear waves, is examined in the realm of... Read More about Kinematic response of single piles for different boundary conditions: Analytical solutions and normalization schemes.

Dynamic Winkler modulus for axially loaded piles (2012)
Journal Article
Mylonakis, G., Anoyatis, G., Anoyatis, G., & Mylonakis, G. (2012). Dynamic Winkler modulus for axially loaded piles. Géotechnique, 62(6), 521-536. https://doi.org/10.1680/geot.11.P.052

The problem of axial dynamic pile-soil interaction and its analytical representation using the concept of a dynamic Winkler support are revisited. It is shown that depth- and frequency-dependent Winkler springs and dashpots, obtained by dividing the... Read More about Dynamic Winkler modulus for axially loaded piles.

Resonance-dependent Winkler moduli for laterally-loaded piles under inertial and kinematic loading
Presentation / Conference
Anoyatis, G., & Lemnitzer, A. Resonance-dependent Winkler moduli for laterally-loaded piles under inertial and kinematic loading

Winkler models are widely used to predict the response of piles under lateral inertial and kinematic loading. Usually the pile is treated as a flexural beam and the restraining and dissipative action of the surrounding soil can be considered through... Read More about Resonance-dependent Winkler moduli for laterally-loaded piles under inertial and kinematic loading.