Anisotropic responses, constitutive modeling and the effects of strain-rate and temperature on the formability of an aluminum alloy

WITHDRAWN: Dislocation-based constitutive modeling of martensitic/ferritic steels at elevated temperatures. Part II: Cyclic behavior without hold time effects

“…Thus, in effect, multiple parameters need to be identified for different loading conditions that render the models less robust and their predictive capabilities rather limited. Similarly, numerous constitutive models that can explicitly account for temperature and strain-rate -or equivalently, plastic shear rate -effects exist (Beyerlein and Tomé, 2008;Khan and Baig, 2011;Khan and Liang, 1999;Sung et al, 2010;Uenishi and Teodosiu, 2004;Voyiadjis and Abed, 2005b;Zerilli and Armstrong, 1987) but they are generally restricted by their applicability and capability to be extended to materials other than the subject material therein. Although preliminary efforts have shown promise (Okrajni et al, 2008), further progress in the development of constitutive models that can account for thermo-mechanical loads also still faces challenges (Aktaa and Petersen, 2009).…”

Computationally efficient predictions of crystal plasticity based forming limit diagrams using a spectral database

“…Accordingly, a wide range of phenomenological constitutive models have been coupled with several localization criteria to investigate the effect on the predicted FLDs of various mechanical features, such as plastic anisotropy (Neale and Chater, 1980;Cao et al, 2000;Kuroda and Tvergaard, 2000;Wu et al, 2004;Zhang and Wang, 2012), strain-rate sensitivity (Ghosh, 1977;Hutchinson and Neale, 1978b;Neale and Chater, 1980;Khan and Baig, 2011;Manopulo et al, 2015), temperature (Khan and Baig, 2011;Manopulo et al, 2015) and damage-induced softening (Haddag et al, 2009;Abed-Meraim et al, 2014;Mansouri et al, 2014). However, a major shortcoming in the phenomenological constitutive models is their inability to consider accurately many of the salient microstructural aspects of the material behavior, such as crystallographic texture (Hosford and Caddell, 1993;Raabe et al, 2005).…”

Temperature dependent work hardening in Ti–6Al–4V alloy over large temperature and strain rate ranges: Experiments and constitutive modeling

“…The superiority of one model over the other should consider the number of the material constants in each model, and from mathematical formulas, any model with a large number of material parameters is supposed to approximate the test responses primarily [17,23].…”