Skip to Main content Skip to Navigation
Journal articles

A new type of numerical experiment on the spatial and temporal patterns of localization of deformation in a material with a coupling of grain size and rheology [rapid communication]

Abstract : The patterns of localization of deformation in recrystallising materials are investigated via a series of two-dimensional grain-scale numerical simulations. These simulations couple a grain-size and strain dependant viscous rheology with grain size reduction and grain growth processes. The simulations are able to predict the mechanical, microstructural and strain evolution of the polycrystals to moderate strain, and allow us to examine the nature of the time dependent feedback between mechanical and microstructural behavior. It was found that significant strain localization occurred only when the grain size dependence of the viscosity was non-linear, and was greatly enhanced by the activity of the grain-size modifying processes. The intensity and location of the zone of strain localization varied spatially and temporally, and displayed two length and time scales, with the result that the finite strain state showed a much broader, and hence less intense, zone of localized deformation than the instantaneous state.
Document type :
Journal articles
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03642990
Contributor : Nathalie POTHIER Connect in order to contact the contributor
Submitted on : Friday, April 15, 2022 - 1:51:58 PM
Last modification on : Saturday, June 25, 2022 - 8:53:34 AM

Identifiers

Collections

Citation

Mark Jessell, Esteban Siebert, Paul Bons, Lynn Evans, Sandra Piazolo. A new type of numerical experiment on the spatial and temporal patterns of localization of deformation in a material with a coupling of grain size and rheology [rapid communication]. EARTH AND PLANETARY SCIENCE LETTERS, 2005, 239, pp.309-326. ⟨10.1016/j.epsl.2005.03.030⟩. ⟨insu-03642990⟩

Share

Metrics

Record views

0