Exploració per tema "Classificació AMS::74 Mechanics of deformable solids::74R Fracture and damage"
Ara es mostren els items 1-15 de 15
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A blended shifted-fracture/phase-field framework for sharp/diffuse crack modeling
(2023-02-28)
Article
Accés obertThe shifted fracture method (SFM) is an embedded method that enables sharp crack representations while using mesh-fitted data structures. In the SFM, the true crack is embedded in the computational grid, but the crack ... -
A continuous-discontinuous model for crack branching
(John Wiley & sons, 2019-10-05)
Article
Accés obertA new continuous-discontinuous model for fracture that accounts for crack branching in a natural manner is presented. It combines a gradient-enhanced damage model based on nonlocal displacements to describe diffuse cracks ... -
A hybridizable discontinuous Galerkin phase-field model for brittle fracture
(2019-05-01)
Article
Accés obertPhase-field models for brittle fracture consider smeared representations of cracks, which are described by a continuous field that varies abruptly in the transition zone between unbroken and broken states. Computationally, ... -
A hybridizable discontinuous Galerkin phase-field model for brittle fracture with adaptive refinement
(John Wiley & sons, 2020-03-30)
Article
Accés obertIn this paper, we propose an adaptive refinement strategy for phase-field models of brittle fracture, which is based on a novel hybridizable discontinuous Galerkin (HDG) formulation of the problem. The adaptive procedure ... -
A new continuous-discontinuous damage model: cohesive cracks via an accurate energy-transfer process
(2014-02)
Article
Accés obertA new continuous-discontinuous strategy to describe failure of quasi-brittle materials is presented. For the early stages of the failure process, a gradient-enhanced model based on smoothed displacements is employed. As ... -
A Proper Generalized Decomposition (PGD) approach to crack propagation in brittle materials: with application to random field material properties
(Springer, 2020-02)
Article
Accés obertUnderstanding the failure of brittle heterogeneous materials is essential in many applications. Heterogeneities in materialproperties are frequently modeled through random fields, which typically induces the need to solve ... -
Adaptive refinement for phase-field models of brittle fracture based on Nitsche's method
(Springer, 2020-03-18)
Article
Accés obertA new adaptive refinement strategy for phase-field models of brittle fracture is proposed. The approach provides a computationally efficient solution to the high demand in spatial resolution of phase-field models. The ... -
Cell-DEVS modeling and simulation of artificial hydraulic fracturing of rocks in boreholes (WIP)
(Society for Computer Simulation International, 2018)
Text en actes de congrés
Accés restringit per política de l'editorialHydraulic Fracturing is a technique used in the extraction and exploration of oil and gas. During hydraulic fracturing, a high-pressure fluid is injected into a wellbore; this fluid flows through some artificially made ... -
Dynamics of crack propagation with adaptive refinement based on unfitted meshes
(Universitat Politècnica de Catalunya, 2020-07)
Projecte Final de Màster Oficial
Accés obertFracture mechanics is a field of mechanics concerned with the study of the propagation of cracks originated in different materials. This field has achieved great popularity in recent years, due to the massive interest of ... -
Model de phase-field dinàmic per a fractura fràgil
(Universitat Politècnica de Catalunya, 2019-07)
Treball Final de Grau
Accés obertEls models de phase-field per a fractura fràgil descriuen les fractures com a zones danyades mitjançant un camp continu que varia entre els estats intacte i trencat. En aquest treball, implementem numèricament un model de ... -
Model de phase-field dinàmic per a fractura fràgil amb refinament adaptatiu
(Universitat Politècnica de Catalunya, 2021-07)
Treball Final de Grau
Accés obertEls models de phase-field poden reproduir la propagació de fractures en diferents materials. En aquest treball, es desenvolupa una eina computacional per trobar la solució del model de phase-field dinàmic usant el mètode ... -
Numerical estimation of the bearing capacity of resistance spot welds in martensitic boron steels using a J-integral fracture criterion
(2018-08-01)
Article
Accés obertPredicting the bearing capacity of resistance spot welds (RSW) during vehicle crash tests has become a crucial task for the automotive industry, since the recent introduction of advanced high strength steels (AHSS) such ... -
Revisiting pyramid compression to quantify flexoelectricity: a three-dimensional simulation study
(2015-03-03)
Article
Accés obertFlexoelectricity is a universal property of all dielectrics by which they generate a voltage in response to an inhomogeneous deformation. One of the controversial issues in this field concerns the magnitude of flexoelectric ... -
Surface tension controls the hydraulic fracture of adhesive interfaces bridged by molecular bonds
(American Institute of Physics (AIP), 2019-11-26)
Article
Accés obertBiological function requires cell-cell adhesions to tune their cohesiveness; for instance, during the opening of new fluid-filled cavities under hydraulic pressure. To understand the physical mechanisms supporting this ... -
The shifted fracture method
(2021-11-30)
Article
Accés obertWe propose a new framework for fracture mechanics, based on the idea of an approximate fracture geometry representation combined with approximate interface conditions. Our approach evolves from the shifted interface method, ...