Study On Behavior Of Aluminum Alloy Perforated Members Under Axial Loads

As a new type of material, aluminum alloy is used more and more widely in modem structure design. And it is becoming an important work to study the behavior of fundamental members of aluminum alloy under the force. In recent years, the aluminum alloy axial compression members have been deeply and widely researched. But it is relatively less for the research of the perforated components, especially the tubular components with hole. However, we often have to open a single or multiple holes in order to ensure convenient assembly and traverse of facility such as pipeline and electric wire in some buildings. The existence of the hole destroys the geometric continuity of the structure, and has a great effect on bearing capacity and buckling modes of the component. Therefore, in order to meet the requirements of the engineering practice, it is necessary to study the aluminum alloy axial compression members with hole.A numerical investigation on 6061-T6 aluminum alloy tubular columns with hole in compression is described in this paper. Both material and geometrical nonlinearities were considered in the analysis. The accurate finite element models were developed for the buckling analysis of stub columns and intermediate columns. Based on the numerical results, a calculation method of ultimate bearing capacity of aluminum alloy columns with hole was proposed. The effects of the existence, size, amount and location of the hole on the load carrying capacity and buckling modes of aluminum alloy tubular columns were evaluated. And combined with the results of numerical simulation, the design formulas of the aluminum alloy axial compression members with hole were put forward by comparing the calculation methods of aluminum alloy axial compression members and cold bending thin-wall perforated members.