Experimental study on the mechanical behavior of 5A90 aluminum-lithium alloy subjected to combined tensile-shear loadings The combined strength of 5A90 aluminum-lithium alloy

This paper presents experimental and numerical studies on the mechanical behavior of 5A90 aluminum-lithium alloy under combined tension and shear loading. Extensive experimental tests under tension and combined loading were conducted, and the influence of material direction, notch radius, and load angle were considered. Based on the test re-sults, the yield strength, ultimate strength, fracture displacement, strain-stress curve, and displacement-stress curve were obtained, discussed, and analyzed. The finite element model (FEM) including fracture behavior was developed, and it was found that the estab-lished FEM can well predict the mechanical response of 5A90 aluminum-lithium alloy. Parametric studies were also conducted. Finally, by comparing with the results from FEM (and tests) and predictions from available design codes, the calculation method in Euro -code 9 was suggested to predict the combined strength of 5A90 aluminum-lithium alloy. (c) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Automated summary

This paper presents experimental and numerical studies on the mechanical behavior of 5A90 aluminum-lithium alloy under combined tension and shear loading. The yield strength, ultimate strength, fracture displacement, strain-stress curve, and displacement-stress curve were obtained and analyzed. A finite element model (FEM) was developed to predict the mechanical response of the alloy and parametric studies were conducted. The calculation method in Euro-code 9 was suggested for predicting the combined strength of 5A90 aluminum-lithium alloy.