All Outputs (10)

UKACM Proceedings 2024 (2024)
Presentation / Conference Contribution
(2024, April). UKACM Proceedings 2024. Presented at 2024 UK Association for Computational Mechanics Conference, Durham, UK

The proceedings present 52 scientific papers written for the 32nd conference of the UK Association for Computational Mechanics (UKACM). The papers submitted to UKACM 2024 cover the breadth of computational mechanics research within the UK and beyond... Read More about UKACM Proceedings 2024.

Engineering soil barriers to minimise annual shrinkage/swelling in plastic clays (2024)
Journal Article
Tsiampousi, A., Day, C., & Petalas, A. (2024). Engineering soil barriers to minimise annual shrinkage/swelling in plastic clays. Geomechanics for Energy and the Environment, 38, Article 100540. https://doi.org/10.1016/j.gete.2024.100540

Engineered soil barriers have been proposed to prevent rainwater infiltration into the underlying soil, thus improving stability of sloping ground. The use of engineered barriers on flat ground as means of preventing flooding has also been explored.... Read More about Engineering soil barriers to minimise annual shrinkage/swelling in plastic clays.

Bounding surface plasticity model modification for ratcheting of metals (2023)
Journal Article
Dafalias, Y. F., Petalas, A. L., & Feigenbaum, H. (2023). Bounding surface plasticity model modification for ratcheting of metals. International Journal of Solids and Structures, 281, Article 112412. https://doi.org/10.1016/j.ijsolstr.2023.112412

The Bounding Surface (BS) plasticity model for metals is modified according to the proposition introduced in the works of Burlet and Cailletaud (1986) and Delobelle (1993) for the kinematic hardening of a classical Armstrong/Frederick (AF) model, cal... Read More about Bounding surface plasticity model modification for ratcheting of metals.

Numerical investigation of the performance of engineered barriers in controlling stormwater runoff (2022)
Journal Article
Petalas, A. L., Tsiampousi, A., Zdravkovic, L., & Potts, D. M. (2022). Numerical investigation of the performance of engineered barriers in controlling stormwater runoff. Geomechanics for Energy and the Environment, 32, Article 100401. https://doi.org/10.1016/j.gete.2022.100401

In this paper, 2-dimensional, hydro-mechanically coupled finite element analyses are conducted to assess the performance of an engineered barrier, constructed from natural geomaterials, aimed at reducing flood risk in urban environments. The barrier... Read More about Numerical investigation of the performance of engineered barriers in controlling stormwater runoff.

Assessing static liquefaction triggering considering fabric anisotropy effects under the ACST framework (2022)
Journal Article
Bokkisa, S. V., Macedo, J., Petalas, A. L., & Arson, C. (2022). Assessing static liquefaction triggering considering fabric anisotropy effects under the ACST framework. Computers and Geotechnics, 148, Article 104796. https://doi.org/10.1016/j.compgeo.2022.104796

Previous experimental studies have shown that the onset of instability in sands under undrained loading is affected by the initial state (i.e., void ratio and confinement), intermediate stresses, and fabric anisotropy. These experimental results have... Read More about Assessing static liquefaction triggering considering fabric anisotropy effects under the ACST framework.

SANISAND-F: Sand constitutive model with evolving fabric anisotropy (2020)
Journal Article
Petalas, A. L., Dafalias, Y. F., & Papadimitriou, A. G. (2020). SANISAND-F: Sand constitutive model with evolving fabric anisotropy. International Journal of Solids and Structures, 188-189, 12-31. https://doi.org/10.1016/j.ijsolstr.2019.09.005

In order to incorporate the very important role of evolving fabric anisotropy on the mechanical response of sand, a constitutive model is developed within the frameworks of Bounding Surface plasticity and Anisotropic Critical State Theory in multiaxi... Read More about SANISAND-F: Sand constitutive model with evolving fabric anisotropy.

In Situ Stress Assessment Based on Width and Depth of Brittle Borehole Breakouts (2019)
Book Chapter
Gerolymatou, E., & Petalas, A. (2020). In Situ Stress Assessment Based on Width and Depth of Brittle Borehole Breakouts. In Recent Developments of Soil Mechanics and Geotechnics in Theory and Practice (297-319). Springer. https://doi.org/10.1007/978-3-030-28516-6_16

Borehole breakouts, as well as breakouts in tunnels and shafts, are a common occurrence, especially under high in situ stresses or stress states with high deviatoric component. Though they can pose a risk to stability, often they are of use, especial... Read More about In Situ Stress Assessment Based on Width and Depth of Brittle Borehole Breakouts.

Implicit integration of incrementally non-linear, zero- elastic range, bounding surface plasticity (2019)
Journal Article
Petalas, A. L., & Dafalias, Y. F. (2019). Implicit integration of incrementally non-linear, zero- elastic range, bounding surface plasticity. Computers and Geotechnics, 112, 386-402. https://doi.org/10.1016/j.compgeo.2019.04.009

The zero elastic range, bounding surface plasticity framework is a suitable choice for modeling materials which exhibit zero purely elastic response during shearing. As a consequence of zero elastic range the plastic strain increment direction, and c... Read More about Implicit integration of incrementally non-linear, zero- elastic range, bounding surface plasticity.

SANISAND‐FN: An evolving fabric‐based sand model accounting for stress principal axes rotation (2018)
Journal Article
Petalas, A. L., Dafalias, Y. F., & Papadimitriou, A. G. (2019). SANISAND‐FN: An evolving fabric‐based sand model accounting for stress principal axes rotation. International Journal for Numerical and Analytical Methods in Geomechanics, 43(1), 97-123. https://doi.org/10.1002/nag.2855

SANISAND is the name of a family of bounding surface plasticity constitutive models for sand within the framework of critical state theory, which have been able to realistically simulate the sand behavior under conventional monotonic and cyclic loadi... Read More about SANISAND‐FN: An evolving fabric‐based sand model accounting for stress principal axes rotation.

Finite element modelling of seismic liquefaction in soils (2013)
Journal Article
Galavi, V., Petalas, A., & Brinkgreve, R. (2013). Finite element modelling of seismic liquefaction in soils. Geotechnical engineering, 44(3),

Numerical aspects of seismic liquefaction in soils as implemented in the finite element code, PLAXIS, is described in this paper. After description of finite element equations of dynamic problems, three practical dynamic boundary conditions, namely v... Read More about Finite element modelling of seismic liquefaction in soils.