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- W3118146548 abstract "Coal failure behavior under dynamic loading is significant for dealing with the failure issues encountered in underground coal mines. In this study, the crack propagation and internal fracture process of coal under dynamic loading were investigated by a split Hopkinson pressure bar (SHPB) experimental system and numerical approach, respectively. The experimental and numerical results show that the coal crack propagation and internal fracture surface manifest significant multifractal features. Further, multifractal analysis suggests that the multifractal feature becomes more and more significant during the dynamic loading. The formation mechanism of the multifractal features was further discussed, and the result demonstrates that the crack propagation path within coal is essentially a multifractal structure, thus causing the total fracture behavior of coal to show multifractal features under dynamic loading. Moreover, the multifractal spectrum parameter [Formula: see text] was proved to be closely related to the brittle fracture property of coal, which transpires that the multifractal feature is feasible to evaluate the coal brittleness under dynamic loading and also applicable to predict the coal failure risk in underground coal mines." @default.
- W3118146548 created "2021-01-05" @default.
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- W3118146548 date "2021-05-04" @default.
- W3118146548 modified "2023-10-16" @default.
- W3118146548 title "TIME-VARYING MULTIFRACTAL ANALYSIS OF CRACK PROPAGATION AND INTERNAL FRACTURE PROCESS OF COAL UNDER DYNAMIC LOADING" @default.
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- W3118146548 doi "https://doi.org/10.1142/s0218348x21500894" @default.
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