Characterization and Simulation of Mechanical Behavior of 6063 Aluminum Alloy Thin-Walled Tubes

Abstract

The material characterization and mechanical behaviors of aluminum alloy (6063) were investigated using flat specimens and the butterfly specimens with a modified Arcan fixture. The butterfly specimens were tensile-loaded at various stress triaxiality by changing the loading angles of the Arcan fixture. The flat specimens were tensile-loaded at various strain rates. The results of tensile tests at various stress triaxiality showed that the curves of engineering stress-engineering strain are obviously different. The results of different strain rates tensile tests showed that the yield stress and fracture stress increased slightly with strain rates increasing, however the fracture strain decreased obviously with strain rates increasing, and the ultimate strength almost remained constant. The Johnson-cook constitutive model could be used to describe the dynamic axial crashing behavior of thin-walled 6063 aluminum alloy tubes under impact loading. The material constants of the Johnson-cook constitutive model and failure model were acquired to be used for FEM simulation through material characterization.

Numerical Simulations of Sandwich Structures Under Lateral Compression

“…In order to guarantee an optimal strength/weight ratio of the structural components, the use of aluminum alloys is widely used. AA 6063-T5 exhibited an excellent mechanical behavior and great resistance to corrosion (Zhu, Qin, Wang & Qi, 2011). Thus, all evaluated structures in this study are made with AA6063-T5.…”

Quantification of Aluminum Increase Factors for Curtain Wall Design Using Finite Element Methods

“…These expected yield strength values were also reinforced by an extensive series of testing of 6063-T5 aluminum performed at a range of strain rates [20]. In Ref.…”

“…In Ref. 20, the yield strength is measured to be 30.1-30.3 ksi (in the expected strain rates of interest) and the corresponding fracture strains are 0.0945-0.1149 (9.4-11.5%). These higher yield strengths support an increase in the SIF for the values shown in Table 1 to 1.2-1.24, and the higher fracture strains suggest that DIF increases are appropriate.…”