We compare the dislocation model with a new discrete model of plasticity. According to the previously proposed model, a crystal lattice with spherically symmetric potential of interatomic interaction is unstable under shear stresses in the internal regions of the crystal. The surface layers preserve the unstable crystal lattice, which creates the state of unstable equilibrium in the crystal. As an important feature of the proposed model, we can mention the fact that the shift of atomic planes in the crystal occurs under low stresses in the absence of any defects, including dislocations. We also describe the advantages of the proposed model as compared with the dislocation model discovered in the course of analysis of the available experimental data.

中文翻译：

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实体塑性变形的新离散模型

我们将位错模型与可塑性的新离散模型进行比较。根据先前提出的模型，具有球对称原子间相互作用势的晶格在晶体内部区域的剪切应力下是不稳定的。表层保留了不稳定的晶格，从而在晶体中产生不稳定的平衡状态。作为所提出模型的一个重要特征，我们可以提到这样一个事实，即在没有任何缺陷（包括位错）的情况下，晶体中原子平面的移动是在低应力下发生的。我们还描述了所提出的模型与在可用实验数据分析过程中发现的位错模型相比的优势。