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Recent Submissions
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Diffusion-reaction modelling of the degradation of oil-well cement exposed to carbonated brine
(2017)
Conference report
Open AccessThe essential aspects of a diffusion-reaction model in development for the degradation process of oil-well cement exposed to carbonated brine are presented in this paper. The formulation consists of two main diffusion/reaction ... -
Avoiding fracture instability in wedge splitting tests by means of numerical simulations
(2017)
Conference report
Open AccessIn this paper, unstable fracture propagation obtained in a in-house performed experimentalWedge Splitting Test (WST) is simulated by means of the FEM and fracture- based zero-thickness interface elements. In order to obtain ... -
Further developments in stress initialization in geomechanics via FEM and a two-step procedure involving Airy functions
(2017)
Conference report
Open AccessThe in-situ stress field in rock masses is a key aspect when a numerical analysis of a rock mass is carried out in any area of geo-engineering, such as civil, mining, or Oil & Gas. A method for the numerical generation of ... -
Analysis of vertical facing panel-joint gap in reinforced soil walls
(International Geosynthetics Society (IGS), 2017)
Conference report
Restricted access - publisher's policyThis paper extends the numerical parametric study previously reported by the writers for the vertical load distribution and vertical gap compression between facing panel units in steel reinforced soil walls ranging in ... -
Coupled H-M fracture interaction using FEM with zero-thickness interface elements
(2017)
Conference report
Open AccessMassive treatments of hydraulic fracturing is a procedure employed for low permeability reservoirs stimulation. This technique consists in generating a series of parallel spaced fractures parallel (multi-stage fracturing). ... -
Modelling of heat and moisture transfer in concrete at high temperature
(2017)
Conference report
Open AccessMoisture diffusion and related fluid pressures play a key role in cracking and spalling of concrete subject to high temperatures. This paper describes recent developments of a mode for moisture and heat transfer in porous ... -
3D-mesomechanical analysis of external sulfate attack in concrete
(2017)
Conference report
Open AccessThe present study focuses on degradation of concrete by external sulfate attack. The numerical model developed by the MECMAT/UPC group, incorporates coupled C-M analysis using a meso-mechanical approach with discrete ... -
Modeling concrete expansions via couped C-M mesoscale analysis with zero-thickness interface elements, and lab experiments
(ISTE-Wiley, 2017)
Conference report
Restricted access - publisher's policyThis paper briefly summarizes ongoing developments on C-M coupled modelling of concrete swelling due to external sulfate attack and due to alkali-silica reaction. Both models are based on a meso-mechanical model for concrete, ... -
Application of configurational mechanics to crack propagation
(International Centre for Numerical Methods in Engineering (CIMNE), 2017)
Conference report
Open AccessCrack initiation and propagation is an essential aspect in the mechanical behavior of a large variety of materials and structures in all fields of Engineering and, in particular, the prediction of crack trajectories is one ... -
Comparison of discrete and equivalent continuum approaches to simulate the mechanical behavior of jointed rock masses
(CRC Press, 2016)
Conference report
Restricted access - publisher's policyModeling of rock masses is of major importance to assess the Geomechanical behaviour of oil &gas reservoirs, especially for fractured tight reservoirs. The presence of discontinuities will significantly influence the general ... -
Discrete modeling of multiple discontinuities in rock mass using XFEM
(OnePetro, 2017)
Conference report
Restricted access - publisher's policyModeling of discontinuities (fractures and fault surfaces) is of major importance to assess the geomechanical behavior of oil and gas reservoirs, especially for tight and unconventional reservoirs. Numerical analysis of ... -
Efem vs. XFEM: a comparative study for modeling strong discontinuity in geomechanics
(OnePetro, 2015)
Conference report
Restricted access - publisher's policyModeling of big faults or weak planes of strong and weak discontinuities is of major importance to assess the Geomechanical behaviour of mining/civil tunnel, reservoirs etc. For modelling fractures in Geomechanics, prior ...