Results 41 to 50 of about 2,822,738 (195)
Frontiers in Earth Science, 2022 At present, a large number of physical tests and numerical simulations have been carried out to study the effect of confining pressure on rock deformation mechanism, and some achievements have been achieved; however, the mechanism of rock deformation in ...
Zhichao Tian +7 more
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Engineering Science and Technology, an International Journal, 2020 Widely reported damage modelling methods inherently use elastic brittle rapidly decaying responses for materials under both uniaxial tension and compression, in spite of the existence of ample experimental evidences that the damaging process under ...
Ali Jelvehpour +2 more
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International Journal of Extreme Manufacturing, 2023 Brittle materials are widely used for producing important components in the industry of optics, optoelectronics, and semiconductors. Ultraprecision machining of brittle materials with high surface quality and surface integrity helps improve the ...
Weihai Huang, Jiwang Yan
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Journal of Materials Research and Technology, 2021 Machining-induced edge chipping damage represents a common challenge in ceramic applications. This paper reports on responses of zirconia materials with porous and dense microstructures to edge chipping damage induced in conventional and ultrasonic ...
Afifah Z. Juri +3 more
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A critical review of some damage models with unilateral effect [PDF]
, 2002 The concern here is the macroscopic modeling of the brittle damage unilateral effect (due to the opening-closure of microcracks). Several formulations have been proposed in recent years to solve the problems pointed out by Chaboche (Int. J. Damage Mech.
Cormery, Fabrice, Welemane, Hélène
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Anisotropic damage model for concrete and other quasi-brittle materials
, 2021 A thermodynamically consistent formulation to model anisotropic damage for quasi-brittle materials is proposed. The model is based on proper expressions for the specific Gibbs free energy and the complementary form of the dissipation potential.
Jani Vilppo +5 more
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Study on Progressive Failure of Hard Rock Tunnel After Excavation Under High Stress
Advances in Civil Engineering, 2022 The analysis and simulation of brittle failure of hard rock tunnels under high stress is essential for understanding and mastering the brittle failure characteristics of rock masses and for analyzing and regulating the stability of surrounding rocks in ...
Daning Zhong +4 more
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Rupture by damage accumulation in rocks [PDF]
, 2006 The deformation of rocks is associated with microcracks nucleation and propagation, i.e. damage. The accumulation of damage and its spatial localization lead to the creation of a macroscale discontinuity, so-called "fault" in geological terms, and to the
A Buchel +64 more
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Plasto-damage modelling for semi-brittle geomaterials
E3S Web of Conferences, 2016 This paper presents an elastoplastic damage model for constitutive modelling of semi-brittle geomaterials showing two irreversible mechanisms. On one hand, the model deals with the plastic behaviour of a porous medium by a new variant of Barcelona Basic ...
Alizadeh Ali, Gatmiri Behrouz
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Predicting excavation damage zone depths in brittle rocks
Journal of Rock Mechanics and Geotechnical Engineering, 2016 During the construction of an underground excavation, damage occurs in the surrounding rock mass due in large part to stress changes. While the predicted damage extent impacts profile selection and support design, the depth of damage is a critical aspect
Matthew A. Perras, Mark S. Diederichs
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