Creep model of bond-degradation in deep granite based on variable radius particle clump [PDF]
Scientific ReportsThe creep failure of rocks is related to its microstructure, external loading and time. A nonlinear yield model was introduced to describe the variation in the cohesion and friction angle with plastic strain and intergranular stress.
Chunzhe Jin +5 more
doaj +2 more sources
Study on the fractional creep model of roadway filling paste under the coupling effect of pore water pressure and stress [PDF]
HeliyonFilling paste in deep roadways is significantly affected by groundwater, especially high pore water pressure, which increases the complexity and variability of the filling paste's mechanical properties.
Hongmiao Lv
doaj +2 more sources
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
doaj +2 more sources
New Maxwell Creep Model Based on Fractional and Elastic-Plastic Elements
Advances in Civil Engineering, 2020 Creep models are mainly used to describe the rheological behaviour of geotechnical materials. An important research focus for studying creep in geotechnical materials is the development of a model with few parameters and good simulation performance ...
Hao Tang, Dongpo Wang, Zhao Duan
doaj +2 more sources
An isochronous stress ratio logarithmic strain curve based clay creep model considering the effects of hardening and damage [PDF]
Scientific ReportsCreep is one of the typical mechanical properties of clay, and studying the creep mechanical properties of clay is of great significance to construction projects in clay sites. This study conducted creep tests on Chengdu clay and found that the soil mass
Peng Wang, Yin Tang, Peng Ren, Hua Zhang
doaj +2 more sources
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
doaj +1 more source
An elastic-viscoplastic creep model for describing creep behavior of layered rock
Frontiers in Materials, 2023 To describe the full-stage creep behavior of layered rock accurately, a new elastic-viscoplastic creep model is proposed based on fractional order theory in this manuscript, which consists of a Hooke elastomer, a fractional Abel dashpot, a Kelvin body ...
Yukun Li +3 more
doaj +1 more source
Design of an Anthracite Creep Model Based on Fractional Order Theory: Experiments and Simulations
Applied Sciences, 2023 Fractional order theory was used to characterize the accelerated creep phase of a nonlinear creep model. To accurately describe each stage of the anthracite creep model, the “gyroscope” unit was introduced by combining the Heaviside function and the ...
Gang Li +6 more
doaj +1 more source
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
doaj +1 more source
Metals, 2023 The limitations of the established and existing creep failure models have inspired the development of a new creep prediction model. Models like Norton–Bailey and Omega are unable to model the tertiary creep curve for engineering materials.
Mohsin Sattar +4 more
doaj +1 more source