Results 21 to 30 of about 486,445 (234)
PLoS ONE, 2023 The creep process of the coal rock around the extraction boreholes under stress-water coupling is an important factor affecting the stability of the boreholes. To study the influence of the water content of perimeter of the coal rock around the boreholes
Jiangbo Guo +3 more
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Non-stationary Nishihara model in the particle flow code
工程科学学报, 2015 In order to accurately simulate the whole process of rock creep and explore the generation and development of mircofractures from the meso-level,a visco-elastoplastic Nishihara rheological constitutive model is developed in the two-dimensional particle ...
YANG Zhen-wei +4 more
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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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The behavior of structures based on the characteristic strain model of creep [PDF]
, 2011 There has been much work over the past two decades to aid the design and assessment engineer in the selection of a suitable material model of creep for high temperature applications.
Boyle, James
core +4 more sources
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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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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Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
Experimental Study on Creep Characteristics and Mechanisms of Wenzhou Soft Soil
Journal of Marine Science and EngineeringThis study investigates the creep behavior of Wenzhou marine soft soil through 1D and triaxial creep tests, revealing that the secondary consolidation coefficient initially increases then stabilizes with stress level, decreases with OCR, increases with ...
Yongwei Chen +7 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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