NUMERICAL SIMULATION OF A THIN-WALLED BEAM WITH WARPING STIFFENERS UNDERGOING TORSION

Abstract

A new approach to numerical simulation of behavior of thin-walled beams of open crosssection with some warping stiffeners is presented. The structure model consists of one-dimensional finite elements described by the standard theory of thin-walled beams with non-deformable crosssection and FEM superelements with warping stiffeners. Comparative study of different kinds of modeling of the beams is performed; some numerical examples of simulation of I-beams behavior are given.

Keywords

• thin-walled beams
• warping stiffeners
• torsion