Flow Stress Description Characteristics of Some Constitutive Models at Wide Strain Rates and Temperatures

The commonly employed mathematical functions in constitutive models, such as the strain hardening/softening model, strain-rate hardening factor, and temperature-softening are reviewed, their prediction characteristics illustrated. results may assist one (i) to better understand behavior of model that employs a given function; (ii) find reason for deficiencies, if any, an existing model; (iii) avoid employing inappropriate function future models. This study subsequently illustrates flow stress description twelve models at wide rates (from 10?6 106 s?1) temperatures absolute melting temperatures) using material parameters presented original studies. phenomenological considered herein include Johnson–Cook, Shin–Kim, Lin–Wagoner, Sung–Kim–Wagoner, Khan–Huang–Liang, Rusinek–Klepaczko physically based Zerilli–Armstrong, Voyiadjis–Abed, Testa et al., Steinberg Preston–Tonks–Wallace, Follansbee–Kocks illustrations foregoing be informative selecting appropriate understanding interpreting simulation obtained finding reference develop