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arXiv 1904.04526cond-mat.stat-mech
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等级纤维丛中的雪崩动力学

Avalanche dynamics in hierarchical fiber bundles

Soumyajyoti Biswas, Michael Zaiser

摘要:

异质材料通常以层次结构的方式组织起来,其中一个基本单元在多个尺度上重复,然后结构获得自相似模式。这种结构的例子存在于各种生物和合成材料中。分级结构可以对这种系统的失效强度和机械响应产生重大影响。在这里,我们考虑一个纤维束模型的层次结构和研究的效果的自相似安排的雪崩动力学模型表现出的方法失败。我们表明,该模型的失效强度一般会降低在一个层次结构,而不是没有这样的层次结构存在的情况。然而,我们也报告了一个特殊的安排的层次结构的故障阈值可以大大高于一个非层次的参考结构。

英文摘要:

Heterogeneous materials are often organized in a hierarchical manner, where a basic unit is repeated over multiple scales.The structure then acquires a self-similar pattern. Examples of such structure are found in various biological and synthetic materials. The hierarchical structure can have significant consequences for the failure strength and the mechanical response of such systems. Here we consider a fiber bundle model with hierarchical structure and study the effect of the self-similar arrangement on the avalanche dynamics exhibited by the model during the approach to failure. We show that the failure strength of the model generally decreases in a hierarchical structure, as opposed to the situation where no such hierarchy exists. However, we also report a special arrangement of the hierarchy for which the failure threshold could be substantially above that of a non hierarchical reference structure.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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