Results 31 to 40 of about 44,930 (304)
Analysis of an improved Nishihara creep model considering plastic strain accumulation
Frontiers in Materials, 2023 Rock-engineering structures, particularly subway excavation rock-engineering structures, are subjected to the long-term effects of external loading that may gradually damage and cause creep and severe plastic deformations or even progressive failure. The
Yang Cheng, Liangliang Zhang
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A Nonlinear Creep-damage Constitutive Model of Mudstone Based on the Fractional Calculus Theory [PDF]
Journal of Petroleum Science and Technology, 2017 During the flood development in an oil field, the creep characteristic of mudstone is one of the important factors causing casing damage. In this study, based on the theory of fractional order differential and taking into account the creep damage ...
Zhang Jun, Zeng Jia
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Scientific Reports, 2022 Mud shale, used in drilling engineering, is prone to hydration and expansion, resulting in creep deformation that leads to wellbore shrinkage and pipe sticking incidents.
Xinxin Fang +3 more
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Creep rupture of materials: insights from a fiber bundle model with relaxation
, 2010 I adapted a model recently introduced in the context of seismic phenomena, to study creep rupture of materials. It consists of linear elastic fibers that interact in an equal load sharing scheme, complemented with a local viscoelastic relaxation ...
E. A. Jagla, H. Kawamura, K. Yamaguchi
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The effect of thermal cycling on the high-temperature creep behaviour of a single crystal nickel-based superalloy [PDF]
, 2007 Isothermal and thermal cycling creep behaviours of a single crystal nickel-based superalloy have been studied by means of tensile tests at 1150 °C and 80 MPa.
Andrieu, Eric +3 more
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A new engineering approach to predict the hydrostatic strength of uPVC\ud pipes [PDF]
, 2007 Extruded unplasticised Poly(Vinyl Chloride) (uPVC) pipes are certified using pressurised pipe tests.\ud During these tests the pipes are subjected to a certain temperature and internal pressure, while the\ud time-to-failure, the time at which the ...
Bor, T.C. +3 more
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Study on the Nonlinear Damage Creep Model of the Weak Interlayer
Advances in Civil Engineering, 2022 The weak interlayer has become a weak link in slope engineering due to its rheological effect. It is of great significance to study the nonlinear creep model of weak interlayer for long-term stability of the slope. In this paper, based on the creep curve
Erjian Wei +6 more
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Scientific ReportsOn the basis of the law of conservation of energy, the three stages of rock creep are analyzed. The reasons for the difficulty in studying the accelerated creep stage of rocks using the traditional creep model are expounded.
Di Zhou +9 more
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Stability of MC Carbide Particles Size in Creep Resisting Steels [PDF]
Metalurgija, 2006 Theoretical analysis of the dependence microstructure creep rate. Discussion on the effects of carbide particles size and their distribution on the base of accelerated creep tests on a steel X20CrMoV121 tempered at 800 °C.
Vodopivec, F. +2 more
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Torsion system for creep testing with multiple stress reversals [PDF]
, 1969 Torsion system proves exploratory data on accelerated creep due to multiple stress reversals. Torsional testing of tubular specimens is best suited for reversed stress creep tests since large strains are obtainable while maintaining specimen ...
Lilienthal, P. A.
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