2003
DOI: 10.3189/172756403781815375
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A mesoscopic approach for modelling texture evolution of polar ice including recrystallization phenomena

Abstract: A material model for the simulation of anisotropic behaviour due to texture development in polar ice is presented. Emphasis is laid on the strain-induced texture development and its relaxation due to rotation recrystallization and grain boundary migration in the low-velocity regime. The model is based on two scales (mesoscopic approach). Kinematics, balance equations and constitutive assumptions are defined with respect to the grain level (mesoscale). Slip-system behaviour is assumed to be Newtonian. Recrystal… Show more

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Cited by 24 publications
(42 citation statements)
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“…Gödert, 2003;Gillet-Chaulet et al, 2006). We assume that the ice fabric is primarily induced by deformation rather than recrystallisation.…”
Section: Ice Fabric: Description and Evolutionmentioning
confidence: 99%
See 1 more Smart Citation
“…Gödert, 2003;Gillet-Chaulet et al, 2006). We assume that the ice fabric is primarily induced by deformation rather than recrystallisation.…”
Section: Ice Fabric: Description and Evolutionmentioning
confidence: 99%
“…We assume that the ice fabric is primarily induced by deformation rather than recrystallisation. In that case, following Gödert (2003) and GilletChaulet et al (2006) the evolution of the second-order orientation tensor a (2) and boundary conditions can be written as…”
Section: Ice Fabric: Description and Evolutionmentioning
confidence: 99%
“…Russell-Head and 25 Budd, 1979;Jacka and Maccagnan, 1984;Pimienta et al, 1987;Morgan et al, 1998;DiPrinzio et al, 2005;Durand et al, 2009;Budd et al, 2013;Montagnat et al, 2014), has driven the development of rheological descriptions in which the connection between deviatoric stresses and resulting strain-rates is regarded as an intrinsic material property determined by the effects of microstructure on bulk deformation processes, (e.g. Lile, 1978;Lliboutry, 1993;Azuma and Goto-Azuma, 1996;Staroszczyk and Gagliardini, 1999;Thorsteinsson, 2001;Gödert, 2003;Gillet-Chaulet et al, 2005;Pettit et al, 2007;Placidi et al, 2010).…”
Section: Microstructure Approachesmentioning
confidence: 99%
“…Flow relations based on a continuous description of fabric, e.g., a parameterised orientation distribution function (ODF) or c-axis orientation tensor are also possible (e.g. Staroszczyk and 10 Gagliardini, 1999;Gödert, 2003;Gillet-Chaulet et al, 2005;Pettit et al, 2007;Placidi et al, 2010). Including any fabric-based rheological description in an ice sheet model requires a separate set of equations governing the fabric evolution.…”
mentioning
confidence: 99%
“…2), to be modelled by u * gr , and (ii) rotation recrystallization (polygonization), to be modelled by the orientation flux q * [18]. By assuming a linear dependence on the stretching tensor D = Sym L, the constitutive vector u * gr takes the form…”
Section: Constitutive Equations For the Orientation Mass Balancementioning
confidence: 99%