Investigation on the mechanical properties of shale subjected to different conditions based on nanoindentation experiments and numerical simulation
Source abstract
Abstract
Nano indentation has become an important means to study the mechanical properties of rock because of its nondestructive and high efficiency. In this work, the Weibull distribution function is used to statistically analyze the nanoindentation test results and to analyze them mechanically and parametrically. The indentation process was simulated using ABAQUS to investigate the effect of semi-through cracks at the indentation on the indentation results. The experimental and simulated results were also analyzed using the dimensional analysis method. The results show that the elastic modulus, hardness and fracture toughness are positively correlated. The correlation between hardness and fracture toughness is poor. In the simulated indentation experiment, the number, depth, distance and Angle of semi-penetrating cracks have different effects on the indentation results. The proportional coefficients of dimensional analysis fitting curves are 0.464, 0.464, 0.457 and 0.462, respectively, which means that the number and depth of cracks have a great influence on the experimental results.
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Research context
OpenAlex topics: Metal and Thin Film Mechanics · Diamond and Carbon-based Materials Research · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (27)
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1. Research and exploration of deep rock mechanics
2. Experimental study of the mechanical properties of stratigraphic shale rocks using nanoindentation experiments: a case study of the Lower Sillitong Longmaxi Formation in the Youyang area of southeast Chongqing10.1016/S1876-3804(19)30016-3 ↗
3. Applications of nano-indentation methods to estimate nanoscale mechanical properties of shale reservoir rocks10.1016/j.jngse.2016.09.068 ↗
4. The effect of microstructure and rock mineralogy on water imbibition characteristics in tight reservoirs10.1016/j.jngse.2016.01.002 ↗
5. Experimental and numerical investigation on shale fracture behavior with different bedding properties10.1016/j.engfracmech.2021.107639 ↗
6. Meso-fracture behavior of Longmaxi shale with different crack-depth ratios: experimental and numerical investigations10.1016/j.engfracmech.2021.108025 ↗
7. Experimental and numerical investigation on meso-failure fracture behavior of Longmaxi outcrop shale with differently angled bedding10.1016/j.jrmge.2019.11.001 ↗
8. Nanoscale fracture mechanics of Gondwana coal10.1016/j.coal.2019.02.007 ↗
9. Meso-scale mechanical properties of mudstone investigated by nanoindentation10.1016/j.engfracmech.2020.107245 ↗
10. P. Shukla, V. Kumar, M. Curtis, et al., Nanoindentation studies on shales, in: Proceedings of the 47th US Rock Mechanics/geomechanics Symposium, One Petro, 2013.
11. V. Kumar, M.E. Curtis, N. Gupta, et al., Estimation of elastic properties of organic matter in wood ford shale through nanoindentation measurements: SPE Canadian Unconventional Resources Conference, J. Soc. Pet. Eng., 2012.10.2118/162778-MS ↗
12. Study on mechanical properties of shale based on micron indentation experiments10.1016/S1876-3804(15)30069-0 ↗
13. Nanoscale rock mechanical property changes in heterogeneous coal after water adsorption10.1016/j.fuel.2018.01.006 ↗
14. Microstructural and geomechanical analysis of Bakken shale at nanoscale
15. Finite element analysis of nano/micro pit array fabrication by nanoindentation process10.4028/www.scientific.net/KEM.274-276.319 ↗
16. Elastic-plastic properties of thin film on elastic-plastic substrates characterized by nanoindentation test10.1016/S1003-6326(10)60653-X ↗
17. Modeling the influence of roughness on nanoindentation data using finite element analysis
18. Meso-fracture mechanism and its fracture toughness analysis of Longmaxi Shale including different angles by means of M-SENB tests10.1016/j.engfracmech.2019.05.009 ↗
19. An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments10.1557/JMR.1992.1564 ↗
20. Assessment of deep shale fracture toughness using nanoindentation tests
21. Scaling relationships for indentation measurements10.1080/01418610208235693 ↗
22. Evaluation of the piezoelectric stress constants of BNKT film by combining nanoindentation test with finite element method
23. Effective properties of a fly ash geopolymer: synergistic application of X-ray synchrotron tomography, nanoindentation, and homogenization models10.1016/j.cemconres.2015.08.004 ↗
24. Fracture toughness of fly ash-based geopolymer gels: evaluations using nanoindentation experiment and molecular dynamics simulation10.1016/j.conbuildmat.2020.120797 ↗
25. Modeling the effects of heterogeneity and anisotropy on the excavation damaged/disturbed zone (EDZ)10.1007/s00603-009-0177-3 ↗
26. Study on equivalent elastic modulus of sand pebble soil based on Eshelby tensor and Mori-Tanaka equivalent method
27. Nanoindentation test and parameter homogenization of mesoscopic mechanical properties of deep buried granite