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189 personnes travaillent au LJLL

90 permanents

82 chercheurs et enseignants-chercheurs permanents

8 ingénieurs, techniciens et personnels administratifs

99 personnels non permanents

73 doctorants

14 post-doc et ATER

12 émérites et collaborateurs bénévoles


Chiffres mars 2019


GTMN - M. Bercovier

Isogeometric analysis, a short introduction


TJ Hugues in Austin and IMATI group let by A. Realli and G. Sangali in Pavia have recently strongly pushed a novel approach of numerical analysis methods based on non-uniform B-spline formulations (NURBS). We will give a short introduction pointing out the differences with the classic Finite Element Method. We review some pros and cons., the use of T-Splines as a meshless type of construct for mesh refinement and the construction of new "FEM" type appoximations for vector fields. This last aspect gives rise to powerfull higher order approximations for field problems such as Stokes, Maxwell and elasticity equations, by discretisation of the Rham and Hodge complexes.

Mise à jour
C.David - 28/09/17