Experimental analysis of the height–diameter ratio effect of rock energy under uniaxial cyclic loading–unloading conditions

Meng, Qinglin; Liu, Jiangfeng; Huang, Bingxiang; Zhang, Zhizhen; Jing-kui, Long; Wu, Jiangyu

doi:10.1007/s10064-023-03305-1

Cited by 7 publications

(1 citation statement)

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“…Meng 18 investigated the effects of different height/diameter ratios on the mechanical properties and damage characteristics of rock specimens, and revealed the influence of size effect on energy. Guo 19 the mechanical properties and damage characteristics of various predamaged (PD) rocks have been investigated under triaxial compression conditions.…”

Section: Introductionmentioning

confidence: 99%

Acoustic emission characteristics and energy evolution law of rock damage process of different pore structures under cyclic loading

Jiang,

Dang,

Chen

et al. 2024

Sci Rep

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The AE and damage characteristics of three types of pore-structured rock under the same working conditions are studied by means of uniaxial cyclic loading and unloading tests. The results suggest that with repeated loading and unloading, AE ringing increases as a “jump”, and the denser the structure, the earlier the “jump” occurs. The AE cumulative energy shows a “step” upward trend, but there is a significant difference in the “step” spacing. By comparing the energy distribution of rocks with different pore structures, it can be seen that the smaller the porosity and the smaller the pore size, the greater the energy input and storage, and the earlier the internal failure. Compared with the other two energy-based damage calculation methods, the damage calculation method defined in this paper is closer to the true internal damage level of the rock loading cycle. The NSE value of the modified damage variable calculation method was significantly improved and it was shown that the dissipated energy before pore compaction is the main energy causing damage, after pore compaction the combined effects of dissipated energy and plastic deformation energy result in rock damage.

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Section: Introductionmentioning

confidence: 99%