Concept

Application linéaire par morceaux

Publications associées (63)

A comparative study of the harmonic balance method and the orthogonal collocation method on stiff nonlinear systems

The high-order purely frequency-based harmonic balance method (HBM) presented by Cochelin and Vergez (2009) [1] and extended by Karkar et al. (2013) [2] now allows to follow the periodic solutions of regularized non-smooth systems (stiff systems). This pap ...

Elsevier2014

Exponential convergence of the hp version of isogeometric analysis of 1D

Annalisa Buffa

We establish exponential convergence of the hp-version of isogeometric analysis for second order elliptic problems in one spacial dimension. Specifically, we construct, for functions which are piecewise analytic with a finite number of algebraic singularit ...

Springer, Cham2014

A Multi-Dimensional Analysis of Hard Shoulder Running Systems

André-Gilles Dumont, Dimitrios Efthymiou, Sofia Samoili

The use of Hard Shoulder Running (HSR) systems is a relatively recent control policy aiming to ameliorate traffic conditions in recurrent congested networks. This ITS strategy attracts researchers and practitioners interest, in an attempt to assess its imp ...

2014

Fast Partitioning of Vector-Valued Images

Martin Kurt Storath

We propose a fast splitting approach to the classical variational formulation of the image partitioning problem, which is frequently referred to as the Potts or piecewise constant Mumford-Shah model. For vector-valued images, our approach is significantly ...

Siam Publications2014

Koopmans-compliant functionals and their performance against reference molecular data

Nicola Marzari, Giovanni Borghi, Andrea Ferretti

Koopmans-compliant functionals emerge naturally from extending the constraint of piecewise linearity of the total energy as a function of the number of electrons to each fractional orbital occupation. When applied to approximate density-functional theory, ...

Amer Physical Soc2014

Deformation capacity and strength of brick masonry spandrels

Katrin Beyer

In unreinforced masonry (URM) structures vertical walls are connected by horizontal spandrel elements. Spandrels have been subjected to extensive damage during earthquakes and are often the first elements within a URM building to crack or fail. If URM buil ...

2014

An augmented mixed finite element method for the vorticity–velocity–pressure formulation of the Stokes equations

Ricardo Esteban Ruiz Baier

This paper deals with the numerical approximation of the stationary two-dimensional Stokes equations, formulated in terms of vorticity, velocity and pressure, with non-standard boundary conditions. Here, by introducing a Galerkin least-squares term, we end ...

Elsevier2013

An augmented mixed finite element method for the vorticity-velocity-pressure formulation of the Stokes equations

Ricardo Esteban Ruiz Baier

Elsevier2013

Characterization of T-splines with reduced continuity order on T-meshes

Annalisa Buffa, Mithlesh Kumar

The use of T-splines [30] in Isogeometric Analysis [24] has been proposed in [5] as a tool to enhance the flexibility of isogeometric methods. If T-splines are a very general concept, their success in isogeometric analysis relies upon some basic properties ...

2012

Identification of the elastic and damping properties in sandwich structures with a low core-to-skin stiffness ratio

Thomas Gmür, Alain Schorderet, Marco Matter, Joël Cugnoni

A mixed numerical-experimental identification procedure for estimating the storage and loss properties in sandwich structures with a soft core is developed The proposed method uses at the experimental level a precise measurement setup with an electro-dynam ...

2011

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