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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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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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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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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The International Journal of Advanced Manufacturing Technology, 2022 Abstract Due to the complexity of extrusion 3D printing objects and lack of universal parameters, there are few classified statistics or quantitative description for the "extrudability" of material with shear thinning properties. In order to systematically study the rheological properties of extrudable materials and establish a unified ...
Yonghao Luo +7 more
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Creep failure characteristics and damage creep model of red layer soft rock based on Perzyna viscoplastic theory [PDF]
Scientific ReportsRock creep is essentially a process of damage accumulation. According to the damage evolution of rock under creep conditions, the TAW2000 triaxial test system is used to carry out triaxial creep test on red layer soft rock taken from Yibo Tunnel in ...
Lei Chen +6 more
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Creep damage model of deep granite under coupled temperature-stress conditions [PDF]
Scientific ReportsTo investigate the long-term creep behavior of deep granite in geological repositories for high-level radioactive waste under coupled temperature and stress conditions, a full-time temperature–stress coupled creep damage constitutive model (TSD model ...
Jun Hu +8 more
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