Influence of Plate Stiffener Geometry on LTB Capacity

Contributing USMA Research Unit(s)

Civil and Mechanical Engineering, Center for Innovation and Engineering

Publication Date


Publication Title

American Institute of Steel Constructions

Document Type

Conference Proceeding


The standard analytical equations for elastic and inelastic lateral-torsional buckling assume a connection that permits rotation about the strong axis (as well as warping), but prevents twist about the longitudinal axis. The plate stiffener, commonly called a shear tab, is idealized as such a connection. In this paper, the influence of plate stiffener geometry on the lateral-torsional buckling capacities of various wide-flange beams is studied, using high-fidelity computer simulation. Preliminary results indicate that plate stiffener geometries have a significant effect on beam LTB capacity.

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