晶体缺陷规范场中的刃位错

EDGE DISLOCATION IN CRYSTAL DEFECT GAUGE FIELD

本文用位错连续分布方法表出了刃位错所产生的应变和应力场,得到了刃位错芯区内、外的应力场,位错芯区的无限小位错分布用缺陷规范场表出,并在一定规范条件下求解了位错规范场,在刃位错芯区外,其应力场与Volterra位错的应力场完全一样,而在芯区内,当r趋于零,刃位错的应力场为有限,消除了应力的奇异性。

In this paper, the strain and stress field produced by an edge dislocation are expressed by means of continuous dislocation distribution. The stresses inside and outside the core of the edge dislocation are obtained. The dislocation distribution of infinitesimal strength is expressed by crystal defect gauge field, which are calculated under certain gauge condition. In side the core, the stresses are finite when r goes to zero. The singularity of stresses is removed. Finally, the energy of the edge dislocation are calculated.