Tensile test and finite element simulation of coarse-grained thin aluminium sheets

Szlancsik, Attila and Varga, Dorottya (2024) Tensile test and finite element simulation of coarse-grained thin aluminium sheets. IOP CONFERENCE SERIES: MATERIALS SCIENCE AND ENGINEERING, 1313. No.-012004. ISSN 1757-8981

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Abstract

The aim of this work was to investigate the ability of finite element simulations applied to specimens containing only a few grains for tensile testing. For this purpose, two different finite element models were created: one with individual grains with individual flow curves generated by viscoplastic self-consistent (VPSC) calculations and one with uniform material properties throughout the cross-section of the sample. In comparison of the two models with experimental tensile tests, the following conclusions can be yielded. The measurement and the simulation with individual grains have the same deformation shape. Also, the mechanical properties (yield strength, tensile strength and elongation at break) were within 10% error. However, if the measurement results were compared to the simulation with homogeneous material, it showed an error up to 53%. Therefore, it can be stated that the tensile tests of these types of specimens can be simulated, but only if the grains are modelled individually.

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