%0 Journal Article
%@ 1742-6588
%A Morini, Lorenzo
%A Piccolroaz, Amdrea
%A Mishuris, Gennady
%D 2013
%F eprints:3236
%I IOP Publishing
%J Journal of Physics: Conference Series
%N 1
%P 012014
%T Dynamic energy release rate in couple-stress elasticity
%U http://eprints.imtlucca.it/3236/
%V 451
%X This paper is concerned with energy release rate for dynamic steady state crack problems in elastic materials with microstructures. A Mode III semi-infinite crack subject to loading applied on the crack surfaces is considered. The micropolar behaviour of the material is described by the theory of couple-stress elasticity developed by Koiter. A general expression for the dynamic J-integral including both traslational and micro-rotational inertial contributions is derived, and the conservation of this integral on a path surrounding the crack tip is demonstrated.
%Z Presented at International Symposium on Dynamic Deformation and Fracture of Advanced Materials, Loughborough University, UK, 9-11 September, 2013.