We study the statistical properties of the yielding transition in model amorphous solids in the limit of slow, athermal deformation. Plastic flow occurs via alternating phases of elastic loading punctuated by rapid dissipative events in the form of collective avalanches. We investigate their characterization through energy vs. stress drops and at multiple stages of deformation, thus revealing a change of spatial extent of the avalanches and degree of stress correlations as deformation progresses. We show that the statistics of stress and energy drops only become comparable for large events in the steady flow regime. Results for the critical exponents of the yielding transition are discussed in the context of prior studies of similar type, revealing the influence of model glass and preparation history.

Graphical Abstract

中文翻译：

---

剪切的非晶态固体在非热拟静态极限中的雪崩：原子学角度

我们研究了模型非晶态固体在缓慢，无热变形的极限下的屈服转变的统计特性。塑性流动是通过弹性负荷的交替阶段发生的，这些阶段被集体耗散的雪崩形式的快速耗散事件所打断。我们通过能量与应力下降以及在变形的多个阶段研究它们的表征，从而揭示了随着变形的进行，雪崩的空间范围和应力相关程度的变化。我们表明，应力和能量下降的统计仅在稳定流态下的大型事件中具有可比性。在类似类型的先前研究中讨论了屈服转变临界指数的结果，揭示了玻璃样板和制备历史的影响。

图形概要