Skip to Main content Skip to Navigation
Journal articles

Constitutive model for metals with dynamic strain aging

Abstract : In this paper, a modified constitutive relation to model the dynamic strain aging phenomenon is proposed based on the previous model of Voyiadjis-Abed. The dynamic strain aging phenomenon is typically observed in metals for a certain range of strain rates and temperatures. In quasi-static loading experiments which were performed by Abed et al. (2017) using a C45 steel for a large range of temperatures from 298 K to 923 K, a stress increase due to the dynamics strain aging was observed according to the temperature variation. Using both a phenomenological Johnson-Cook model and a physically based Voyiadjis-Abed model, this stress increase cannot be captured when dynamic strain aging is active. The Voyiadjis-Abed model is modified in the present work by means of a mathematical expression of the Weibull distribution that is derived based on a physically based mechanism of evolution of the dislocation density.
Complete list of metadata

https://hal.univ-lorraine.fr/hal-03346365
Contributor : Slim Bahi Connect in order to contact the contributor
Submitted on : Thursday, September 16, 2021 - 12:03:40 PM
Last modification on : Wednesday, August 31, 2022 - 5:22:39 PM

Identifiers

Citation

George Voyiadjis, Yooseob Song, Alexis Rusinek. Constitutive model for metals with dynamic strain aging. Mechanics of Materials, Elsevier, 2019, 129, pp.352-360. ⟨10.1016/j.mechmat.2018.12.012⟩. ⟨hal-03346365⟩

Share

Metrics

Record views

16