2017/09/15 by Ladislav Écsi, Écsi, Ladislav, P. Ván +10
Engineering · Materials Science · Physics and Astronomy · #Elasticity and Material Modeling #FOS: Physical sciences #High-Velocity Impact and Material Behavior #Material Properties and Failure Mechanisms #Materials Science (cond-mat.mtrl-sci) #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.1709.05416
30 pages, 4 figures
arxiv created 2017/09/15 · openalex publication_date 2017/09/15 · arxiv updated 2017/09/19 · openalex created_date 2017/09/25 · openalex updated_date 2026/07/28
In this paper we present a thermodynamically consistent material model which is capable of modelling ductile-to brittle failure mode transition in ductile material undergoing deformations at high strain rates, and demonstrate the performance of the model in a numerical study using a fully coupled thermal-structural finite element analysis of a notched aluminium alloy specimen loaded in cyclic tension. The model is based on an objective representation of the deformation and stress measures and on a rate type constitutive equations. It does not only complies with the principles of material modelling, but it also uses constitutive equations, evolution equations and even "normality rules" during return mapping which can be expressed in terms of power conjugate stress and strain measures, or their objective rates.