ABSTRACT
The aim of this study was to develop a 2D finite element model for composite beams of any cross section, formed of orthotropic materials whose orthotropic axes were not necessarily orthogonal to the cross section. Actually, no code is able to determine the torsional rigidity of Saint Venant (J) of 2D arbitrary shaped cross sections. The determination of J requires a numerical calculation of the torsional warping function. Our finite element model will be used in particular to study cross sections of human long bones and more precisely to determine the homogenized characteristics of arbitrary shaped cross section (epiphyses or diaphyses).
