Journal ArticleDOI
Damage constitutive model based on energy dissipation for intact rock subjected to cyclic loading
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TLDR
In this article, a new damage constitutive model based on energy dissipation was developed to describe the behaviour of rocks under cyclic loading in underground engineering such as coal mining and tunnel excavating applications.About:
This article is published in International Journal of Rock Mechanics and Mining Sciences.The article was published on 2016-05-01. It has received 254 citations till now. The article focuses on the topics: Constitutive equation.read more
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Mechanical properties and damage constitutive model of coal in coal-rock combined body
TL;DR: In this article, two damage constitutive models of coal were established by serially connecting one damage body with one or two Newton body(s), to reveal the influences of rock(s) on the mechanical behavior of coal in coal-rock samples.
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A damage constitutive model for intermittent jointed rocks under cyclic uniaxial compression
TL;DR: In this article, a coupled damage tensor for intermittent jointed rocks is derived based on the Lemaitre strain equivalence hypothesis, which combines the Weibull statistical damage model for micro-flaws and the fracture mechanics model for macro-joints.
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A review of experimental and theoretical research on the deformation and failure behavior of rocks subjected to cyclic loading
TL;DR: In this paper, the state-of-the-art of deformation and failure mechanism and fatigue constitutive relationship of rocks subjected to cyclic loading in the past 60 years is reviewed.
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Effects of height/diameter ratio on failure and damage properties of granite under coupled bending and splitting deformation
TL;DR: In this article, a series of point-bending tests were conducted on granite disc samples with the same diameter but different heights, and the micro-crack evolution during the test was measured and recorded by acoustic emission experiments.
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Effect of coal thicknesses on energy evolution characteristics of roof rock-coal-floor rock sandwich composite structure and its damage constitutive model
TL;DR: In this article, the authors explore energy characteristics of RCF sandwich composite structures, uniaxial compression tests with different coal thicknesses were performed by numerical simulation tests, and a new damage constitutive model was established based on the dissipative energy and total input energy at peak strength, and damage evolution curve and equation of the RCF composite samples were obtained.
References
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Journal ArticleDOI
A continuous damage mechanics model for ductile fracture
TL;DR: In this paper, a model of isotropic ductile plastic damage based on a continuum damage variable, on the effective stress concept and on thermodynamics is derived, showing a large influence of triaxiality by means of a damage equivalent stress.
Journal Article
Criteria for strength and structural failure of rocks based on energy dissipation and energy release principles
TL;DR: In this paper, the intrinsic relations between energy dissipation, energy release, and strength and abrupt structural failure of rocks during failure process are discussed, and the critical stresses at the time of abrupt structural failures of rock under various stress states can be determined by these principles.
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A statistical damage constitutive model for softening behavior of rocks
Xiang Li,Wen-Gui Cao,Yong-Hua Su +2 more
TL;DR: In this article, a basic theory of damage mechanics was introduced to deal with the deformation of strain softening for rocks, and the effect of the damage threshold on the evolution of rock damage was analyzed based on this damage model.
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Sliding crack model for nonlinearity and hysteresis in the uniaxial stress-strain curve of rock
TL;DR: In this paper, the effect of the stress required to close an initially open crack, and the unloading process in detail, is examined. But the model does not seem to have previously been developed in sufficient detail to be used for quantitative predictions.
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Effects of cyclic dynamic loading on the mechanical properties of intact rock samples under confining pressure conditions
Enlong Liu,Siming He +1 more
TL;DR: In this article, a series of laboratory tests were performed to assess the effects of confining pressure on the mechanical properties and fatigue damage evolution of sandstone samples subjected to cyclic loading, and the results from the cyclic dynamic loading tests indicated that the level of confined pressure had a significant influence on the cyclical dynamic deformation and the residual volumetric strain at failure increased.