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Micromechanical inspection of incremental behaviour of crushable soils
(Springer, 2019-10)
Article
Open AccessIn granular soils grain crushing reduces dilatancy and stress obliquity enhances crushability. These are well-supported specimen-scale experimental observations. In principle, those observations should reflect some peculiar ... -
Thermo-hydro-mechanical coupled modeling of methane hydrate-bearing sediments: formulation and application
(2019-06)
Article
Open AccessWe present a fully coupled thermo-hydro-mechanical formulation for the simulation of sediment deformation, fluid and heat transport and fluid/solid phase transformations occurring in methane hydrate geological systems. We ... -
A stable mesh-independent approach for numerical modelling of structured soils at large strains
(Elsevier, 2019-12)
Article
Restricted access - publisher's policyWe describe the large strain implementation of an elasto-plastic model for structured soils into G-PFEM, a code developed for geotechnical simulations using the Particle Finite Element Method. The constitutive model is ... -
Induced seismicity in geologic carbon storage
(2019-06)
Article
Open AccessGeologic carbon storage, as well as other geo-energy applications, such as geothermal energy, seasonal natural gas storage and subsurface energy storage imply fluid injection and/or extraction that causes changes in rock ... -
Swelling behaviour of compacted Maryland clay under different boundary conditions
(Thomas Telford, 2019-06)
Article
Restricted access - publisher's policyThis paper presents an experimental study on the swelling response of compacted Maryland clay specimens subjected to hydration under a range of boundary conditions. The research is multi-scale with swelling tests complemented ... -
Standard penetration testing in a virtual calibration chamber
(Elsevier, 2019-07)
Article
Restricted access - publisher's policyThe virtual calibration chamber technique, based on the discrete element method, is here applied to study the standard penetration test (SPT). A macro-element approach is used to represent a rod driven with an impact like ... -
Tensile strength during drying of remoulded and compacted clay: the role of fabric and water retention
(2018-09)
Article
Restricted access - publisher's policyThe paper presents an experimental investigation on the tensile strength of an unsaturated clay, both in remoulded and compacted states. To complete the experimental study, a new apparatus was designed with the purpose of ... -
The effect of thermal cycles on limestone mechanical degradation
(Elsevier, 2018-09)
Article
Restricted access - publisher's policyThis work presents the results of an experimental program performed to study the effect of long series of moderate thermal cycles on the mechanical response of a limestone rock. Samples were exposed to more than 1000 ... -
Nonlocal plasticity modelling of strain localisation in stiff clays
(Elsevier, 2018-11)
Article
Restricted access - publisher's policyThe paper addresses the numerical simulation of strain localisation in stiff clays that exhibit softening behaviour. An elastoplastic constitutive model developed to incorporate key features of stiff clay behaviour is ... -
Sphericity measures of sand grains
(2019-05)
Article
Restricted access - publisher's policyThe sphericity of a grain should measure the similitude of its shape with that of a sphere. Sphericity is a shape descriptor of long-standing interest for sedimentology. Now it has gained also interest to facilitate discrete ... -
Low-order stabilized finite element for the full Biot formulation in soil mechanics at finite strain
(2019-05)
Article
Restricted access - publisher's policyThis article presents a novel finite element formulation for the Biot equation using low-order elements. Additionally, an extra degree of freedom is introduced to treat the volumetric locking steaming from the effective ... -
Assessment of a high-level spent nuclear fuel disposal model
(2018-08)
Article
Restricted access - publisher's policyThis paper assesses a model for the full-scale engineered barrier experiment (Febex) in situ test, simulating the disposal of heat-emitting, high-level spent nuclear fuel. The model has been developed using Code_Bright and ...