Browsing by Author "Aliguer Piferrer, Ignasi"
Now showing items 1-13 of 13
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Anàlisi biomecànic d'un implant intervertebral mitjançant el mètode dels elements finits
(Universitat Politècnica de Catalunya, 2008-07)
Minor thesis
Open AccessSovint la fusió intervertebral és l'única opció efectiva en pacients que pateixen lesions importants de disc. És necessari conèixer de quina manera es comporta el conjunt vertebral sota aquesta nova configuració. En ... -
Efficient numerical integration of Perzyna viscoplasticity, with application to rock slope stability using zero-thickness interface elements
(CRC Press, 2014)
Conference report
Open AccessIn this paper, Perzyna-type viscoplastic rate equations are integrated for a time step by considering the step as stress-driven. Depending on how the increment is imposed (constant, linear etc.), different strategies arise. ... -
Evaluación de la seguridad en problemas de mecánica de rocas mediante el método c-Φ reduction
(Universitat Politècnica de Catalunya. Escola Tècnica Superior d'Enginyers de Camins Canals i Ports de Barcelona, 2011-11-15)
Conference lecture
Open AccessEn este documento de detalla de forma sintética el trabajo realizado hasta la fecha en la realización por parte del primer autor de la tesis doctoral que lleva por título: “Métodos Numéricos Avanzados para Evaluar la ... -
Further developments in stress initialization in geomechanics via FEM and a two-step procedure involving airy functions
(CIMNE, 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 ... -
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 ... -
Hydro-mechanical coupling in zero-thickness interface elements, formulation and applications in geomechanics
(CRC Press, 2014)
Conference report
Open AccessZero-thickness joint/interface elements of the Goodman type, have been advantageously used to solve many problems in solid mechanics involving material interfaces or discontinuities. Some years ago, the authors have also ... -
Methods for FEM stress initialization based on stress functions, and application to a reservoir cross-section
(OnePetro, 2013)
Conference report
Restricted access - publisher's policyAn accurate description of the in-situ stress field in a rock mass is crucial in different areas of geo-engineering such as: underground excavations, hydrocarbon extraction, CO2 storage, hydraulic fracture etc. In this ... -
Numerical analysis and safety evaluation of a large arch dam founded on fractured rock, using zero-thickness interface elements and a c-φ reduction method
(CIMNE, 2011)
Conference report
Open AccessA 140m high arch dam in the Pyrenees, built in the 50s, is founded on fractured limestone rock. Since the beginning of the design process, two main families of discontinuities were identified. The dam was built very close ... -
Numerical stress initialization in geomechanics via the FEM and a two-step procedure
(CIMNE, 2015)
Conference lecture
Open AccessThe knowledge of the in-situ stress field in rock masses is crucial in different areas of geo-engineering, such as mining or civil underground excavations, hydrocarbon extraction, CO2 storage, hydraulic fracture operations, ... -
Numerical study of intervertebral prosthesis
(CIMNE, 2015)
Conference lecture
Open AccessLumbar interbody fusion is a lumbar surgical procedure that consists of replacing the intervertebral disk with a stiff prosthetic device (the fusion cage), with the purpose of promoting bone growth in between the two ... -
On integration strategies for perzyna-type viscoplasticity, and application to zero-thickness interface elements
(CIMNE, 2013)
Conference report
Open AccessIn this paper, Perzyna-type viscoplastic rate equations are integrated for a time step by considering the step as stress-driven. Depending on how the increment is imposed (constant, linear etc.), ... -
Stress-driven integration strategies and m-AGC tangent operator for Perzyna viscoplasticity and viscoplastic relaxation: application to geomechanical interfaces
(2017-04)
Article
Open AccessThe 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 ... -
Zero-thickness interface elements with h-m coupling, formulation and applications in geomechanics
(CIMNE, 2013)
Conference report
Open AccessPrevious 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 ...
