Micromechanical modelling of the mechanical properties of a granite under dynamic uniaxial compressive loads

Li, H.B.; Zhao, Jun; Li, T.J.

doi:10.1016/s1365-1609(00)00025-3

Cited by 99 publications

(53 citation statements)

References 26 publications

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“…In the first type, e 1cd and e 1ucs or the ratio between them were directly tabulated or plotted [for example, Hidalgo and Nordlund (2013) and Liang et al (2012)]. In the second type, the stress and strain responses were plotted but the related strain thresholds were not presented [for example, Chen et al (2012);Cristescu 2002;He et al 2010;Heap et al 2009;Hu et al 2010;Jiang et al 2005Jiang et al , 2010Klein and Reuschlé 2004;Li et al 2000;Li and Lajtai 1998;Nicksiar and Martin 2012;Pellet et al 2011;Xie et al 2011;Xu et al 2012]. In this case, the strain thresholds must be indirectly extracted using the graphical method shown in Fig.…”

Section: Collection Of Experimental Results From Previous Studiesmentioning

confidence: 99%

A Potential Strain Indicator for Brittle Failure Prediction of Low-porosity Rock: Part I—Experimental Studies Based on the Uniaxial Compression Test

et al. 2014

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In this paper, we have investigated the quantitative relationship between the axial strain threshold at the volumetric strain reversal point (e 1cd ) and the strain threshold at the peak stress (e 1ucs ) during the uniaxial compression tests. We found that normalized values of e 1ucs /e 1cd for different rock types are typically *1.34(±0.24). This is especially true for igneous and metamorphic rocks, or low-porosity sedimentary rocks. To verify this finding, we investigated seven granitic gneiss samples using the uniaxial compression test. Our results were consistent with the above statistics. We inferred that e 1ucs /e 1cd may be an intrinsic property of low-porosity rocks, and may be a potential indicator for predicting failure strains in laboratory-scale rock samples.

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Section: Collection Of Experimental Results From Previous Studiesmentioning

confidence: 99%

A Potential Strain Indicator for Brittle Failure Prediction of Low-porosity Rock: Part I—Experimental Studies Based on the Uniaxial Compression Test

et al. 2014

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“…However, large experimental errors exist for rock-like materials [7]. In order to eliminate this error, Li et al [23,24] proposed a half-sine waveform loading instead of the conventional rectangular waveform loading in SHPB tests.…”

Section: Impact Rammentioning

confidence: 99%

“…It is shown that the dispersion phenomenon occurs when the stress pulse transmits along the input bar in conventional SHPB, which can cause severe oscillation of the ultimate dynamic constitutive response of materials [7,15,30,31]. Merle and Zhao suggest a correct method, which can find potential error of frequency components [32].…”

Section: Numerical Analysis Of Wave Dispersionmentioning

confidence: 99%

“…Since the first use of split-Hopkinson pressure bar (SHPB) system by Kolsky (1949), extensive studies have been performed to investigate dynamic mechanical properties of different materials. So far, SHPB experimental technique has been widely used in geotechnical evaluations and substantial efforts have been made to study dynamic mechanical properties of rocks [1][2][3][4][5][6][7][8][9]. The result shows that the dynamic compressive strength and dynamic tensile strength of lands measurement using SHPB are valid and reliable by Dai et al [10].…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Numerical Evaluation of Rock Dynamic Test with Split-Hopkinson Pressure Bar

Peng

Gao

Liu

et al. 2017

Advances in Materials Science and Engineering

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Feasibility of rock dynamic properties by split-Hopkinson pressure bar (SHPB) was experimentally and numerically evaluated with ANSYS/LS-DYNA. The effects of different diameters, different loading rates, and different propagation distances on wave dispersion of input bars in SHPB with rectangle and half-sine wave loadings were analyzed. The results show that the dispersion effect on the diameter of input bar, loading rate, and propagation distance under half-sine waveform loading is ignorable compared with the rectangle wave loading. Moreover, the degrees of stress uniformity under rectangle and half-sine input wave loadings are compared in SHPB tests, and the time required for stress uniformity is calculated under different above-mentioned loadings. It is confirmed that the stress uniformity can be realized more easily using the half-sine pulse loading compared to the rectangle pulse loading, and this has significant advantages in the dynamic test of rock-like materials. Finally, the Holmquist-Johnson-Concrete constitutive model is introduced to simulate the failure mechanism and failure and fragmentation characteristics of rock under different strain rates. And the numerical results agree with that obtained from the experiment, which confirms the effectiveness of the model and the method.

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“…In order to inquiry the blast theory and fragment distribution of impacted rock, it is very important to research the mechanical properties and failure characteristics of rock under impact loading. Some scholars have achieved a series of research findings in the fields of shock characteristic and theoretical model [1][2][3][4][5][6][7][8][9][10][11][12], at the same times, the impacted rock is recovered for deep analysis. At present, there are two methods for impacted rock recover, the first is soft recover method, a certain mechanical parameter is tested in this proceed and the impacted rock accumulate in light-gas gun recover device, the second is hard recover method, the rock sample is implanted in the matched rigid die for the integrity of impacted rock.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Dynamic Mechanical Properties for Rock Sample under Strong Impact Loading

Gao¹,

Hou²,

Yang³

2010

IJIEEB

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Micromechanical modelling of the mechanical properties of a granite under dynamic uniaxial compressive loads

Cited by 99 publications

References 26 publications

A Potential Strain Indicator for Brittle Failure Prediction of Low-porosity Rock: Part I—Experimental Studies Based on the Uniaxial Compression Test

A Potential Strain Indicator for Brittle Failure Prediction of Low-porosity Rock: Part I—Experimental Studies Based on the Uniaxial Compression Test

Experimental and Numerical Evaluation of Rock Dynamic Test with Split-Hopkinson Pressure Bar

Numerical Analysis of Dynamic Mechanical Properties for Rock Sample under Strong Impact Loading

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