In this paper, numerical analyses of detailed finite element models (FEM) have been carried out to verify the combined influence of link length, boundary conditions and stiffener spacing on the plastic overstrength of “I shaped” HEA links for eccentrically braced frames. Parametric analysis has been carried out by means of FEM simulations under cycling loading where the accuracy of the model is validated on the bases of experimental tests. From the results, it has been observed that the axial boundary conditions play an important rule on the increment of the overstrength factor of HEA links. It has also been pointed out as, in presence of axial restraints, the link member never yields for axial load.
STUDY ON THE OVERSTRENGTH OF HEA EBFS LINKS BY FEM SIMULATIONS
ROSARIO MONTUORI;ELIDE NASTRI;VINCENZO PILUSO
2019
Abstract
In this paper, numerical analyses of detailed finite element models (FEM) have been carried out to verify the combined influence of link length, boundary conditions and stiffener spacing on the plastic overstrength of “I shaped” HEA links for eccentrically braced frames. Parametric analysis has been carried out by means of FEM simulations under cycling loading where the accuracy of the model is validated on the bases of experimental tests. From the results, it has been observed that the axial boundary conditions play an important rule on the increment of the overstrength factor of HEA links. It has also been pointed out as, in presence of axial restraints, the link member never yields for axial load.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
