FINITE ELEMENT ANALYSIS OF AXIAL COMPRESSION PERFORMANCE OF T-SHAPED COLUMN MADE OF STAINLESS STEEL SANDWICH PANEL WITH CORE TUBES

In order to study the effect of sectional height and thickness of column leg for the stainless steel panel with core tubes and the wall thickness of core tube on the T-shaped column under axial compression, combined with the lateral compression performances measured by test, the T-shaped column was analyzed by the finite element analysis software ABAQUS, and the nonlinear buckling was analyzed. The results showed that the buckling mode of the T-shaped column was local buckling of the panel.The length of legs had great influence on the stable bearing capacity.With the increase of thickness of panel,the constraint of core tubes was weaker and weaker,and the contribution to the panel stability was less and less.The core tube could provide support to the panel, but the tubular wall thickness did not play a significant role in the improvement of the stability when the thickness of column leg reached a certain extent.