The study of vertical compressing mechanical properties of thin-walled square tubes filled with aluminum foam

Thin-walled structures with metallic foam filler have been applied more and more widely.Vertical compressing mechanical properties of thin-walled square tubes filled with aluminum foam under quasi-static loading conditions were studied in this paper.The thin-walled square tubes filled with aluminum foam was fabricated by aluminum tube as its shell and Al-Mg closed-cell aluminum foam as its core.The results indicated that the vertical deforming mode of thin-walled square tubes filled with aluminum foam was the same symmetry folding mode as the deforming mode of empty tube,and the number of folds of thin-walled square tubes filled with aluminum foam was more than that of empty tube.And fully foam-filled tubes can endure more stress than the empty tubes.In this paper,finite element models of empty tubes was established and the compressing behavior of this structures is simulated with the use of ABAQUS software,and the mechanical behavior of thinwalled square aluminum alloy tube is studied by simulating compression's experiments numerically and compare with the results of experiments'.Finally the numerical results are in good agreement with this obtained experimentally.