%P 012014
%T Dynamic energy release rate in couple-stress elasticity
%I IOP Publishing
%V 451
%O Presented at International Symposium on Dynamic Deformation and Fracture of Advanced Materials, Loughborough University, UK, 9-11 September, 2013.
%L eprints3236
%D 2013
%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.
%A Lorenzo Morini
%A Amdrea Piccolroaz
%A Gennady Mishuris
%R 10.1088/1742-6596/451/1/012014
%J Journal of Physics: Conference Series
%N 1