Variability in the thermo-mechanical behavior of structural aluminum

Heteroscedastic sparse Gaussian process regression-based stochastic material model for plastic structural analysis

“…9 and the thickness of the beam is 35 mm. The failure strain is set as 0.1 16 . Except for the elastic modulus and flow stress, other uncertainty sources are not taken into account in the current validation process.…”

“…Due to the manufacture error of the material and the variation of the chemical compositions, even the same material will show different behavior under the same conditions. For example, Aakash et.al 16 reported that the flow stress-plastic strain curve of Al6061 aluminum alloys had large variation even under the same temperature. Without considering the material uncertainty, the reliability of the constitutive model cannot be guaranteed, and the simulation given by this constitutive model can be unreliable.…”

Understanding novel gap-bridged remote laser welded (RLW) joints for automotive high-rate and temperature applications

“…To understand the performance of aluminium alloys during a fire, Summers, et al [32] reported high temperature quasi-static mechanical behaviour of 5083-H116 and 6061-T651 where a gradual decrease in ultimate strength was measured with the higher temperature between 200 -350°C. Various aluminium alloys were tested at temperatures ranging from room temperature to 300 °C to understand the variability in the thermo-mechanical behaviour [33], the effect of temperature on dynamic tensile flow stress [34] or generic properties such as tensile strength, creep and fatigue [35]. It was found that flow stress decreased with increase in temperature and beyond 200 °C thermal softening was the predominant mode of deformation mechanism.…”

Auxetic behavior obtained through the large deformations of variants of the rectangular grid

“…Then, two different metals, namely aluminum AA 6061-T651 and steel 4130, were considered. The data for aluminum AA 6061-T651 was obtained from the experimental measurements presented by Aakash et al [1,2] and that were made available [3]. The data for "T_020_A_1_001_022_03", was chosen as representative of the behavior of the alloy.…”