Avalanche precursors of failure in hierarchical fuse networks

作者：Moretti, Paolo^*; Dietemann, Bastien; Esfandiary, Nosaibeh; Zaiser, Michael

来源：Scientific Reports, 2018, 8(1): 12090.

DOI：10.1038/s41598-018-30539-x

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We study precursors of failure in hierarchical random fuse network models which can be considered as idealizations of hierarchical (bio) materials where fibrous assemblies are held together by multi-level (hierarchical) cross-links. When such structures are loaded towards failure, the patterns of precursory avalanche activity exhibit generic scale invariance: irrespective of load, precursor activity is characterized by power-law avalanche size distributions without apparent cut-off, with power-law exponents that decrease continuously with increasing load. This failure behavior and the ensuing super-rough crack morphology differ significantly from the findings in non-hierarchical structures.

• 出版日期2018-8-14
• 单位西南交通大学