H. Chen et Ge. Blandford, FINITE-ELEMENT MODEL FOR THIN-WALLED SPACE FRAME FLEXIBLE CONNECTION BEHAVIOR, Journal of structural engineering, 121(10), 1995, pp. 1514-1521
Citations number
15
Categorie Soggetti
Engineering, Civil","Construcion & Building Technology
A finite-element formulation for modeling flexible connection behavior
in space frames composed of thin-walled members is presented. The fin
ite-element model is based on a distributed linear spring representati
on over the physical contact area of the connection that is capable of
representing translational, rotational, and warping deformations of t
he connection. Second-order geometric and nonlinear moment-rotation re
sponse of the connection is considered. An updated Lagrangian formulat
ion is used to model second-order geometric nonlinear effects. A Rambe
rg-Osgood representation is used to model the nonlinear moment-rotatio
n connection behavior. Details for transforming the resulting stiffnes
s equations for connection-to-member eccentricities are included. Resu
lts for a cubic, portal space frame composed of I-section and C-sectio
n members are presented to demonstrate the versatility of the develope
d element.