Finite deformation Cosserat-type modelling of dissipative solids and its application to crystal plasticity

Citation
R. Sievert et al., Finite deformation Cosserat-type modelling of dissipative solids and its application to crystal plasticity, J PHYS IV, 8(P8), 1998, pp. 357-364
Citations number
28
Categorie Soggetti
Physics
Journal title
JOURNAL DE PHYSIQUE IV
ISSN journal
11554339 → ACNP
Volume
8
Issue
P8
Year of publication
1998
Pages
357 - 364
Database
ISI
SICI code
1155-4339(199811)8:P8<357:FDCMOD>2.0.ZU;2-L
Abstract
Recently, several proposals were made for the enlargement of the classical field equations in order to solve locally inhomogeneous deformation problem s (e.g. at shear banding and damage localization or of composites). In the present paper basic issues of this topic will be treated : i) the implicit dependence within the gradient plasticity theory, ii) the more open micromo rphic view-point of the gradient of internal variable approach, iii) a deri vation of an elastic-plastic decomposition of the Cosserat strain measures, iv) its application to the description of lattice curvature in crystals. F inally, finite element simulations of strain localization in Cosserat singl e crystals are presented.