The dislocation distribution function in the plastic zone at a crack tip is calculated with the help of a modified BCS-type crack model.
本文改进BCS型裂纹位错模型，并对裂纹顶端范性区的位错密度分布进行了计算。
These negative dislocations seem to enter the crack tip and blunt it, resulting in a dislocation-free zone at the crack tip.
这些负号位错将移至裂纹顶端并使之钝化而留下一个无位错区或低位错密度区。
The interaction between piezoelectric screw dislocation and circular crack under remote uniform heat flux was investigated.
研究压电材料在均匀热流作用下螺型位错与圆弧裂纹的相互作用。
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