Stability Analysis Of 3-d Conventional Pallet Rack Structures With Semi-rigid Connections

Abstract

This paper describe the three dimensional finite element modeling and buckling analysis of<br />conventional pallet racking system with semi rigid connection. In this study three<br />dimensional models of conventional pallet racking system were prepared using the finite<br />element program ANSYS and finite element analysis carried out on conventional pallet racks<br />with the 18 types of column sections developed along with semi-rigid connections. A<br />parametric study was carried out to compare the effective length approach and the finite<br />element method for accuracy and appropriateness for cold-formed steel frame design.<br />Numerous frame elastic buckling analyses were carried out to evaluate the alignment chart<br />and the AISI torsional-flexural buckling provisions. The parameters that influence the value<br />of Kx for column flexural buckling were examined in this study. The alignment chart and the<br />AISI torsional-flexural buckling provisions, used to obtain the effective lengths and elastic<br />buckling load of members were also evaluated. Results showed that the elastic buckling load<br />obtained from the AISI torsional-flexural buckling provisions is generally conservative<br />compared to the results obtained from performing frame elastic buckling analysis. Results<br />also showed that, the effective length approach is more conservative than the finite element<br />approach.