Strain Localization Modes within Single Crystals Using Finite Deformation Strain Gradient Crystal Plasticity

The present paper aims at providing a comprehensive investigation of the abilities and limitations strain gradient crystal plasticity (SGCP) theories in capturing different kinds localization modes single crystals. To this end, small deformation Gurtin-type SGCP model recently proposed by authors, based on non-quadratic defect energy uncoupled dissipation assumption, is extended to finite deformation. then applied simulate several problems with slip system configurations. These configurations are chosen such way as obtain idealized kink bands well general bands, i.e., no particular orientation respect initial crystallographic directions. obtained results show good regularizing various except for bands. Finally, reproduce complex behavior crystals undergoing slip, where competition between can take place. Both higher-order energetic dissipative effects considered investigation. For both effects, mesh-independent obtained, proving capabilities behaviors. associated close agreement those using micromorphic approach. Higher-order led dominant banding.