Abstract : The present contribution advocates an up-scaling procedure for computing the limit loads of spatial structures made of composite beams. The resolution of an auxiliary yield design problem leads to the determination of a yield surface in the space of axial force and bending moments. A general method for approximating the numerically computed yield surface by a sum of several ellipsoids is developed. The so-obtained analytical expression of the criterion is then incorporated in the yield design calculations of the whole structure, using second-order cone programming techniques. An illustrative application to a complex spatial frame structure is presented.
https://hal-enpc.archives-ouvertes.fr/hal-00870789
Contributeur : Jérémy Bleyer <>
Soumis le : mardi 8 octobre 2013 - 10:30:33 Dernière modification le : mardi 8 décembre 2020 - 10:21:03 Archivage à long terme le : : jeudi 9 janvier 2014 - 04:27:23
Jérémy Bleyer, Patrick de Buhan. Yield surface approximation for lower and upper bound yield design of 3d composite frame structures. Computers and Structures, Elsevier, 2013, 129, pp. 86-98. ⟨10.1016/j.compstruc.2013.08.011⟩. ⟨hal-00870789⟩