Exploració per autor "Carol, Ignacio"
Ara es mostren els items 80-93 de 93
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Rate-dependent behaviour of fracture propagation in salt rock
(CRC Press, 2022)
Comunicació de congrés
Accés obertThis paper describes an on-going experimental and numerical modelling research project on salt rock specimens. The experimental part of the study consists of a number of Mode I fracture tests with the WST (Wedge-Splitting ... -
Recent developments in durability mesomechanics of concrete, including cracking via interface elements
(American Society of Civil Engineers (ASCE), 2013)
Text en actes de congrés
Accés obertThe mesomechanical model for concrete previously developed for purely mechanical actions, is used as the basis for coupled durability mechanics calculations. Until now, the phenomena studied include drying shrinkage, ... -
RILEM draft recommendation: TC-242-MDC multi-decade creep and shrinkage of concrete: material model and structural analysis. Model B4 for creep, drying shrinkage and autogenous shrinkage of normal and high-strength concretes with multi-decade applicability
(2015-04)
Article
Accés obertIn response to the continuously advancing concrete technology, a new prediction model for creep and shrinkage is presented. This model, named B4, builds on the theoretically justified model B3, which is a RILEM recommendation ... -
Rock bolt behaviour in stress-fractured ground: a FE analysis using zero-thickness interface elements and fracture-based constitutive laws
(2016)
Text en actes de congrés
Accés restringit per política de l'editorialA finite element analysis using zero-thickness interface elements of the Goodman type, which incorporate a fracture mechanics-based mixed-mode constitutive law, is presented to study stress-induced cracking and spalling ... -
Stress-driven integration strategies and m-AGC tangent operator for Perzyna viscoplasticity and viscoplastic relaxation: application to geomechanical interfaces
(2017-04)
Article
Accés obertThe paper proposes a stress-driven integration strategy for Perzyna-type viscoplastic constitutive models, which leads also to a convenient algorithm for viscoplastic relaxation schemes. A generalized trapezoidal rule for ... -
The representation problem of pairs of symmetric second order tensors in the context of solid mechanics
(2003)
Report de recerca
Accés restringit per decisió de l'autor -
Transient large heat advection in fractured rock: a zero-thickness interface formulation
(International Centre for Numerical Methods in Engineering (CIMNE), 2021)
Text en actes de congrés
Accés obertIn a fractured rock mass, the existence of discontinuities may generate preferential paths where the hydraulic flow velocities are frequently much higher than in the porous medium and heat advection tends to dominate over ... -
Viscoplastic constitutive models for zero-thickness interface elements, formulation and applications
(2019)
Text en actes de congrés
Accés obertAn energy-based work-softening visco-plastic model for zero-thickness interface elements has been developed as an extension of an existing elastic-perfectly-viscoplastic formulation. In the inviscid limit the model also ... -
Viscoplastic constitutive models for zero-thickness interface elements, formulation and applications
(CIMNE, 2019)
Text en actes de congrés
Accés obertAn energy-based work-softening visco-plastic model for zero-thickness interface elements has been developed as an extension of an existing elastic-perfectly-viscoplastic formulation. In the inviscid limit the model also ... -
XFEM formulation for discontinuities in fractured rock masses
(CIMNE, 2015)
Comunicació de congrés
Accés obertThe paper describes some aspects of the application of XFEM to represent Geomechanical discontinuities, including the choice of additional nodal variables and the appearance and remedies to the oscillations that may take ... -
XFEM formulation with sub-interpolation, and equivalence to zero-thickness interface elements
(2019-01)
Article
Accés obertThis paper describes a particular formulation of the extended finite element method (XFEM) specifically conceived for application to existing discontinuities of fixed location, for instance, in geological media. The ... -
Zero-thickness interface elements with h-m coupling, formulation and applications in geomechanics
(CIMNE, 2013)
Text en actes de congrés
Accés obertPrevious developments on zero-thickness interface elements for coupled Hydro-Mechanics problems are briefly described, followed by some new geomechanical applications, particularly to hydraulic fracture in rock. The results ... -
Zero-thickness interface model with chemical degradation by acid attack
(2019)
Text en actes de congrés
Accés obertCarbon dioxide (CO2) storage in abandoned oil/gas reservoirs is considered a viable alternative to reduce greenhouse gas emissions to the atmosphere. An important element of the risk associated with long-term CO2 storage ... -
Zero-thickness interface model with chemical degradation by acid attack
(CIMNE, 2019)
Text en actes de congrés
Accés obertCarbon dioxide (CO2) storage in abandoned oil/gas reservoirs is considered a viable alternative to reduce greenhouse gas emissions to the atmosphere. An important element of the risk associated with long-term CO2 storage ...
