Grain-size effect in viscoplastic polycrystals at moderate strains

By Amit Acharya, A. Beaudoin. 2000

301 citations recorded by the source corpus.

Subfields: Materials Chemistry, Mechanics of Materials

View Paper: https://www.semanticscholar.org/paper/b4d976f6555a15ae44e1d7329eb6c752b09872ff

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In Materials Chemistry

In Mechanics of Materials

Citations in the corpus

The boundary-layer effect on the crack tip field in mechanism-based strain gradient plasticity (2001, background): “This has motivated the development of strain gradient plasticity theories (Fleck and Hutchinson, 1993; Fleck et al., 1994; Gao et al., 1999b; Shu and Fleck, 1999; Acharya and Bassani, 2000; Acharya and Beaudoin, 2000; Chen and Wang, 2000; Huang et al., 2000a, b; Dai and Parks, 2001) based on the con”
Impact of the grain size distribution on the yield stress of heterogeneous materials (2007, methodology): “geometrically necessary dislocations (GNDs) have been developed (Acharya and Beaudoin, 2000; Cheong et al., 2005) and predict pretty well the strain-hardening rate dependence on grain size after the yield point making use of the evolution of GNDs (or equivalently the lattice incompatibility). Anothe”
A study of microstructural length scale effects on the behaviour of FCC polycrystals using strain gradient concepts (2004, background): “For instance, in the grain-size effect study by Acharya and Beaudoin (2000) on FCC and BCC polycrystals, only the mesh-insensitive polycrystal response for one particular grain size was shown.”
Crystal Plasticity Finite Element Methods: in Materials Science and Engineering (2010, background): “Grain boundary mechanics, Hall–Petch behavior, grain interaction, grain size effects, strain gradient effects, nonlocal formulations, interface mechanics, superplasticity Becker and Panchanadeeswaran (1995) Mika and Dawson (1998), Acharya and Beaudoin (2000), Meissonnier, Busso, and O’Dowd (2001) Ba”
Modeling the evolution of crystallographic dislocation density in crystal plasticity (2002, methodology): “…dislocation density into working plasticity models has been accomplished using hybrid strength-density models (Dai et al., 2000; Arsenlis and Parks, 2000) or phenomenological extensions of pre-existing strength-based models (Fleck et al., 1994; Shu and Fleck, 1999; Acharya and Beaudoin, 2000).”
A multiscale approach for modeling scale-dependent yield stress in polycrystalline metals (2007, background): “Density of GNDs has been incorporated in the expression of flow stress (Fleck et al., 1994; Gao et al., 1999; Shu and Fleck, 1999), strain hardening ( Acharya and Beaudoin, 2000; Acharya et al., 2003; Ohashi, 2004a, 2005; Akasheh et al., in press), or free energy (Shizawa and Zbib, 1999; Gurtin, 20”
Multiscale modelling of nanomechanics and micromechanics: an overview (2003, methodology): “A more physically intuitive continuum approach to describing strain gradient effects is that followed by constitutive theories such as those developed by Acharya and Beaudoin (2000), Busso et al. (2000), Arsenlis and Parks (2001) and Bassani (2001).”
A physically based gradient plasticity theory (2006, background): “Initial attempts in these directions have been made by Acharya and Beaudoin (2000), Qiu et al. (2001), Arsenlis et al. (2004), Evers et al. (2004), and Aifantis and Willis (2005).”
Dwell fatigue crack nucleation model based on crystal plasticity finite element simulations of polycrystalline titanium alloys (2011, background): “(5) accounts for the effect of GNDs on work hardening (Acharya and Beaudoin, 2000). Here, k0 is a dimensionless material constant, G is the elastic shear modulus, b is the Burgers vector, ga 0 is the initial deformation resistance and â is a non-dimensional constant. â is taken to be (1)3 in this wo”
Overview of constitutive laws, kinematics, homogenization and multiscale methods in crystal plasticity finite-element modeling: Theory, experiments, applications (2010, background): “Beaudoin et al. [110] idealize in their study a simple polycrystal as a 3-”
Size effects and idealized dislocation microstructure at small scales: Predictions of a Phenomenological model of Mesoscopic Field Dislocation Mechanics: Part I (2005, methodology): “Material parameters representative of Al is used for all the computational experiments except for 0k , for which we make the arbitrary choice of 0 20.0k = motivated by Acharya and Beaudoin (2000).”