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Unformatted text preview: one dislocation on the other is zero. Consider a “positive” edge dislocation with along the zdirection and b along the xdirection. A glide component of the PeachKoehler force is exerted on the dislocation provided a nonzero value of is present, and a climb component is exerted provided a nonzero value of is present. This can be confirmed by using PeachKoehler formula Therefore, the positive edge dislocation has a glide force 2 And a climb force The stress field solution for a screw dislocation provides neither of these (only and are produced). Therefore, a parallel screw dislocation does not exert a force on an edge dislocation. The same conclusion is obtained by considering whether an edge dislocation exerts any force on a screw dislocation....
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This note was uploaded on 01/16/2012 for the course MAE 581 taught by Professor Fu during the Fall '11 term at SUNY Buffalo.
 Fall '11
 Fu
 Shear, Stress

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