TY - GEN
T1 - Interaction of dislocations in anisotropic bimaterials
AU - Qu, Jianmin
AU - Yang, Lin
PY - 1991
Y1 - 1991
N2 - The interaction of dislocations in an anisotropic bimaterial are studied in this paper. Using the Stroh formalism in the theory of anisotropic elasticity, explicit real-form expressions of the entire stress field due to an interfacial dislocation in anisotropic bimaterials are obtained in terms of the Barnett-Lothe tensors. Unlike a dislocation in a homogeneous medium, an interfacial dislocation induces two stress fields on the interface; one is inversely proportional to the distance away from the dislocation core, the other is a delta function representing a line force acting at the dislocation core. The presence of the line force is due to the incompatibility of the interface. Taking advantages of the real form solutions, expressions of the interaction energy and Peach-Koehler forces between two dislocations are derived. Possible stable equilibrium configurations of two dislocations are investigated by studying the Peach-Koehler forces exerted on the dislocations.
AB - The interaction of dislocations in an anisotropic bimaterial are studied in this paper. Using the Stroh formalism in the theory of anisotropic elasticity, explicit real-form expressions of the entire stress field due to an interfacial dislocation in anisotropic bimaterials are obtained in terms of the Barnett-Lothe tensors. Unlike a dislocation in a homogeneous medium, an interfacial dislocation induces two stress fields on the interface; one is inversely proportional to the distance away from the dislocation core, the other is a delta function representing a line force acting at the dislocation core. The presence of the line force is due to the incompatibility of the interface. Taking advantages of the real form solutions, expressions of the interaction energy and Peach-Koehler forces between two dislocations are derived. Possible stable equilibrium configurations of two dislocations are investigated by studying the Peach-Koehler forces exerted on the dislocations.
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M3 - Conference contribution
AN - SCOPUS:0026399160
SN - 0791808718
T3 - American Society of Mechanical Engineers, Applied Mechanics Division, AMD
SP - 13
EP - 21
BT - Recent Developments in Elasticity
T2 - Winter Annual Meeting of the American Society of Mechanical Engineers
Y2 - 1 December 1991 through 6 December 1991
ER -