References of "Fancello, Eduardo"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailIdentificación de parámetros de viscoelasticidad finita aplicada a la simulación del comportamiento mecánico de masa encefálica
Fancello, Eduardo; Vigneron, Lara; Noels, Ludovic ULiege et al

in Congreso Iberoamericano de Ingenieria Mecanica (2007, October)

Detailed reference viewed: 356 (12 ULiège)
Full Text
Peer Reviewed
See detailA variational formulation of constitutive models and updates in non-linear finite viscoelasticity
Fancello, Eduardo; Ponthot, Jean-Philippe ULiege; Stainier, Laurent ULiege

in International Journal for Numerical Methods in Engineering (2006), 65(11), 1831-1864

The purpose of this article is to present a general framework for constitutive viscoelastic models in finite strain regime. The approach is qualified as variational since the constitutive updates obey a ... [more ▼]

The purpose of this article is to present a general framework for constitutive viscoelastic models in finite strain regime. The approach is qualified as variational since the constitutive updates obey a minimum principle within each load increment. The set of internal variables is strain-based and employs, according to the specific model chosen, a multiplicative decomposition of strain into elastic and viscous components. The present approach shares the same technical procedures used for analogous models of plasticity or viscoplasticity, such as the Solution of a minimization problem to identify inelastic updates and the use of exponential mapping for time integration. However. instead of using the classical decomposition of inelastic strains into amplitude and direction, we take advantage of a spectral decomposition that provides additional facilities to accommodate, into simple analytical expressions, a wide set of specific models. Moreover, appropriate choices of the constitutive potentials allow the reproduction of other formulations in the literature. The final part of the paper presents a set of numerical examples in order to explore the characteristics of the formulation as well as its applicability to usual large-scale FEM analyses. Copyright (c) 2005 John Wiley [less ▲]

Detailed reference viewed: 28 (1 ULiège)
See detailA viscoelastic formulation for finite strains: application to brain soft tissues
Fancello, Eduardo; Ponthot, Jean-Philippe ULiege; Vigneron, Laura et al

in Proceedings of XXVII CILAMCE – Iberian Latin American Congress on Computational Methods in Engineering (2006)

Detailed reference viewed: 27 (1 ULiège)
Full Text
Peer Reviewed
See detailA variational framework for nonlinear viscoelastic models in finite deformation regime
Fancello, Eduardo; Ponthot, Jean-Philippe ULiege; Stainier, Laurent ULiege

in Journal of Computational & Applied Mathematics (2005), 215(2), 400-408

This work presents a general framework for constitutive viscoelastic models in the finite deformation regime. The approach is qualified as variational since the constitutive updates consist of a ... [more ▼]

This work presents a general framework for constitutive viscoelastic models in the finite deformation regime. The approach is qualified as variational since the constitutive updates consist of a minimization problem within each load increment. The set of internal variables is strain-based and uses a multiplicative decomposition of strain in elastic and viscous components. Spectral decomposition is explored in order to accommodate, into analytically tractable expressions, a wide set of specific models. Moreover, it is shown that, through appropriate choices of the constitutive potentials, the proposed formulation is able to reproduce results obtained elsewhere in the literature. Finally, numerical examples are included to illustrate the characteristics of the present formulation. (C) 2007 Elsevier B.V. All rights reserved. [less ▲]

Detailed reference viewed: 32 (9 ULiège)
Peer Reviewed
See detailA variational formulation of constitutive models and updates in nonlinear finite viscoelasticity
Fancello, Eduardo; Stainier, Laurent ULiege; Ponthot, Jean-Philippe ULiege

in 7ème Colloque National en calcul des Structures (2005)

Detailed reference viewed: 18 (3 ULiège)
See detailA variational framework for nonlinear viscoelastic and viscoplastic models in finite deformation regime
Stainier, Laurent ULiege; Fancello, Eduardo; Ponthot, Jean-Philippe ULiege

in MECOM 2005, , Mecanica Computational (2005)

Detailed reference viewed: 29 (2 ULiège)