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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Modified Nishihara Rheological Model considering the Effect of Thermal-Mechanical Coupling and Its Experimental Verification [PDF]
Advances in Materials Science and Engineering, 2018 The effect of temperature and pressure, which play important roles in the mechanical properties of rocks during deep energy exploitation, has not been sufficiently studied in the previous rock creep models. In order to investigate thermal effect in creep
Xingang Wang +4 more
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The Secondary Development and Application of the Improved Nishihara Creep Model in Soft Rock Tunnels
Buildings, 2023 Given the complexity and diversity of rock formations, existing constitutive models struggle to accurately portray their mechanical properties, leading to substantial discrepancies between numerical simulation outcomes and reality.
Xianghui Deng +5 more
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An Improved Nishihara Model for Frozen Loess considering the Influence of Temperature [PDF]
Advances in Materials Science and Engineering, 2018 A series of triaxial creep tests under the constant confining pressure are performed on frozen loess specimens, and the creep behavior of the frozen loess with respect to variations in both temperature and deviator stress is examined.
Xin Li +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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Improved Nonlinear Nishihara Shear Creep Model with Variable Parameters for Rock-Like Materials
Advances in Civil Engineering, 2020 Creep property is an important mechanical property of rocks. Given the complexity of rock masses, mechanical parameters change with time in the creep process.
Hang Lin +6 more
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Fractional creep model and experimental study of unsaturated silty clay in Fuyang
Frontiers in Earth Science, 2023 Due to the long-term overdraft of groundwater in Fuyang, silty clay in this area has been in an unsaturated state for a long time, which caused ground subsidence and threatened the safety of engineering construction.
Daguo Wu +5 more
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A nonlinear creep model for surrounding rocks of tunnels based on kinetic energy theorem
Journal of Rock Mechanics and Geotechnical Engineering, 2023 The initiating condition for the accelerated creep of rocks has caused difficulty in analyzing the whole creep process. Moreover, the existing Nishihara model has evident shortcomings in describing the accelerated creep characteristics of the ...
Wenbo Liu +4 more
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Research on Creep Model of Roadway Surrounding Rock Based on Variable Creep Parameters
Meikuang Anquan, 2020 In order to study the creep behavior of surrounding rock of Huaying Coal Mine in Sichuan under different confining pressure characteristics, the triaxial creep test of sandstone was carried out by TAW-2000 test system.
LIU Changming, ZHANG Hong
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An extended Nishihara model for the description of three stages of sandstone creep [PDF]
Geophysical Journal International, 2013 SUMMARY ManygentlydippingtranslationalrockslideshavetakenplaceinredJurassicstratainWanzhou which is located in the middle bank area of the Three Gorges Reservoir, China. In order to study the mechanism of these translational rock slides, conventional triaxial tests and creep tests on sandstone specimens from red Jurassic strata in Wanzhou are performed,
Qinghui Jiang +3 more
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