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Four types (DD1, DD2, FD1 and FD2) of complex potential are introduced in this paper. All types are obtained by distributing the dislocation doublet or force doublet along a plane curve. If the axis of dislocation doublet is placed in the tangential (normal) direction of curve, the DD1 (DD2) type of complex potential is obtainable. Similarly, if the axis of force doublet is placed in the tangential...
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