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.
Dynamic Energy Release Rate in Couple-stress Elasticity / Morini, Lorenzo; Piccolroaz, Andrea; Mishuris, G.. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 451:1(2013), pp. 1-7. [10.1088/1742-6596/451/1/012014]
Dynamic Energy Release Rate in Couple-stress Elasticity
Morini, Lorenzo;Piccolroaz, Andrea;
2013-01-01
Abstract
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.| File | Dimensione | Formato | |
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