Simulating stress corrosion with a bonded-particle model for rock

Potyondy, D.O.

doi:10.1016/j.ijrmms.2006.10.002

Cited by 288 publications

(92 citation statements)

References 19 publications

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“…The driving stress-ratio has been defined as the axially applied stress level, at a particular stage in the test, normalized to the average UCS (so-called instantaneous response measured according to ISRM, 1979 standards) and has been used by many other researchers (Schmidtke and Lajtai, 1985;Lajtai et al 1991;Lau and Chandler, 2004;Potyondy, 2007;Damjanac and Fairhurst, 2010) to present long-term (time-dependent) testing results acquired from creep tests.…”

Section: Defining Strain Thresholdsmentioning

confidence: 99%

The three stages of stress relaxation - Observations for the time-dependent behaviour of brittle rocks based on laboratory testing

Paraskevopoulou

Perras

Diederichs

et al. 2017

Engineering Geology

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Section: Defining Strain Thresholdsmentioning

confidence: 99%

The three stages of stress relaxation - Observations for the time-dependent behaviour of brittle rocks based on laboratory testing

Paraskevopoulou

Perras

Diederichs

et al. 2017

Engineering Geology

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“…The PSC model assumes that when stress exceeds threshold value for crack development (σa) and is less than the bond strength, radius of the parallel bond will be decreased with time according to an exponential role [4]. When the stress exceeds strength, rupture will occur in the bond, and the visible crack will appear.…”

Section: Stress Corrosion Of the Concrete Anchormentioning

confidence: 99%

qThermal-Micromechanicsq coupling approach to model the corrosion and crack of concrete anchor

Chen¹,

Pan²,

Lin³

et al. 2018

Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017)

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Abstract．A "Thermal-Micromechanics" coupling approach for corrosion and crack of anchor in the corrosive environment is researched in this study. The thermal module of software PFC2D is applied to simulate diffusion of corrosive media in the concrete while the mechanics module of PFC2D is applied to model stress corrosion and crack resulting from long term tension stress. Information related to the concentration of corrosive media is transferred into the mechanics module to modify the initial crack stress. Bond-fracture information is then read by the thermal module to change the concentration in the crack position. Comparison with experimental data indicates this coupling approach may model diffusion of the corrosive media and the crack satisfactorily.

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“…At the same time, the vertical load and displacement of the specimen were also monitored. [42,44,45], it has been viewed as an effective and realistic method for modeling rocks [36][37][38][39]. Therefore, the parallel bond model is used to model multiple-jointed rock-like specimens in the current work.…”

Section: Laboratory Testsmentioning

confidence: 99%

Experimental and Numerical Study of Failure Behavior and Energy Mechanics of Rock-Like Materials Containing Multiple Joints

Cao

Lin

2017

Advances in Materials Science and Engineering

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This paper investigates the influence of joint geometry parameters on the characteristic stress, failure pattern, and energy mechanism of multiple jointed rock-like specimens under uniaxial compression. Both the laboratory and numerical results show that the higher value of UCS occurs when is around 0 ∘ and changes from 15 ∘ to 30 ∘ or when is around 30 ∘ and changes from 45 ∘ to 75 ∘ . However, the lowest value appears when is around 45 ∘ and changes from 15 ∘ to 30 ∘ . The CDiS (critical dilatancy stress) and CIS (crack initiation stress) show a similar tendency to UCS. Moreover, the specimens present different failure modes for various levels of , , and , and the failure mode can be classified into four categories: stepped path failure; failure through parallel plane; failure through cross plane; material failure. In addition, with higher strength, the input energy and strain energy are higher than those with lower strength. Dissipation energy is affected by the failure modes of the specimens. At the same time, when changes from 0.2 to 0.6, the boundary energy, strain energy, and dissipation energy show a decreasing trend.

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Simulating stress corrosion with a bonded-particle model for rock

Cited by 288 publications

References 19 publications

The three stages of stress relaxation - Observations for the time-dependent behaviour of brittle rocks based on laboratory testing

The three stages of stress relaxation - Observations for the time-dependent behaviour of brittle rocks based on laboratory testing

qThermal-Micromechanicsq coupling approach to model the corrosion and crack of concrete anchor

Experimental and Numerical Study of Failure Behavior and Energy Mechanics of Rock-Like Materials Containing Multiple Joints

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