TY - JOUR
T1 - Finite crack on bimaterial and bicrystal interfaces
AU - Bassani, J. L.
AU - Qu, J.
PY - 1989
Y1 - 1989
N2 - A Griffith crack lying along the interface between anisotropic elastic solids is analysed. Explicit solutions for the displacement and stress fields are obtained when the crack-tip fields are non-oscillatory ; i.e. the condition W = 0 is satisfied as derived by Qu and Bassani (J. Mech. Phys. Solids 37, 417-433, 1989). In this case, the stress intensity factors are real and the three fracture modes are separable at the crack tip. For interfaces formed by misorienting identical anisotropic solids through a relative tilt, this condition is satisfied if the in-plane and anti-plane deformations decouple in the interface-crack coordinates. Complete crack-tip stress fields are calculated for FCC bicrystals satisfying the decoupling condition. Based on Schmid's law, the small-scale-yielding plastic zones surrounding the crack tip are also estimated.
AB - A Griffith crack lying along the interface between anisotropic elastic solids is analysed. Explicit solutions for the displacement and stress fields are obtained when the crack-tip fields are non-oscillatory ; i.e. the condition W = 0 is satisfied as derived by Qu and Bassani (J. Mech. Phys. Solids 37, 417-433, 1989). In this case, the stress intensity factors are real and the three fracture modes are separable at the crack tip. For interfaces formed by misorienting identical anisotropic solids through a relative tilt, this condition is satisfied if the in-plane and anti-plane deformations decouple in the interface-crack coordinates. Complete crack-tip stress fields are calculated for FCC bicrystals satisfying the decoupling condition. Based on Schmid's law, the small-scale-yielding plastic zones surrounding the crack tip are also estimated.
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U2 - 10.1016/0022-5096(89)90023-9
DO - 10.1016/0022-5096(89)90023-9
M3 - Article
AN - SCOPUS:0024928921
SN - 0022-5096
VL - 37
SP - 435
EP - 453
JO - Journal of the Mechanics and Physics of Solids
JF - Journal of the Mechanics and Physics of Solids
IS - 4
ER -