Results 121 to 130 of about 3,685 (135)

Study on Improved Nonlinear Viscoelastic-Plastic Creep Model Based on the Nishihara Model

Geotechnical and Geological Engineering, 2020
The description of rock creep by existing rheological models mainly focuses on the first two stages of creep. However, the description of the accelerated creep stage is rare, which is contrary to the common study of soft rock failure in engineering applications.
Mingyuan Yu, Baoguo Liu, Jinglai Sun, Wenlin Feng, Qi Wang   +4 more
openaire   +3 more sources

A new fractional Nishihara-type model with creep damage considering thermal effect

Engineering Fracture Mechanics, 2021
Abstract Our chief target of this paper is to study the temperature-dependent Nishihara-type model(TDNM) with creep damage based on the Caputo fractional derivative. The Vogel–Fulcher–Tammann (VFT) law is considered due to its property between the viscoelastic and the temperature.
Yi-Ying Feng, Xiao-Jun Yang, Jian-Gen Liu, Zhan-Qing Chen   +3 more
openaire   +3 more sources

A creep model for frozen sand of Qinghai-Tibet based on Nishihara model

Cold Regions Science and Technology, 2019
Abstract The tri-axial creep tests of frozen sand with different dry densities and grain size distributions were performed at 0.1 MPa confining pressure at different temperatures. The results show that the rheological properties of frozen sand are significantly affected by the temperature, the creep deformation of the frozen sand is obvious even ...
Zhan-yuan Zhu, Fei Luo, Yuan-ze Zhang, Dong-jie Zhang, Jun-lin He   +4 more
openaire   +3 more sources

Modified Nishihara model and experimental verification of deep rock mass under the water-rock interaction

International Journal of Rock Mechanics and Mining Sciences, 2020
Abstract During the mining process of deep mines, the instability of surrounding rock caused by rock creep has occurred from time to time. However, it is difficult to study the accelerating creep phase of rock with the classical Nishihara model. Due to the influence of water seepage and different stress, rock creep exhibits non-linear characteristics.
Bingqian Yan, Qifeng Guo, Fenhua Ren, Meifeng Cai   +3 more
openaire   +3 more sources

Nonlinear Nishihara model of soft rock based on damage mechanics and its parameter identification

Materials Today Communications
Xianchao Gao, Taotao Hu, Zhongming Su
openaire   +3 more sources

Improved Nishihara model and its application in describing rock accelerated creep behavior

Geomechanics and Geoengineering
Jun Hu, Junxin Shi, Shuai Zhang, Shangjun Zhao, Zhaokui Sun   +4 more
openaire   +3 more sources

Study on surrounding rock deformation of deep buried tunnel based on nonlinear damage Nishihara model

Applied Mathematical Modelling
Taotao Hu, Xianchao Gao, Hongfei Zhou
openaire   +3 more sources

A new early warning method for landslide critical sliding tangent angle based on modified Nishihara model

Engineering Geology
Hui Wu, Pingping Huang, Weixian Tan, Yaolong Qi, Wei Xu, Yuejuan Chen   +5 more
openaire   +3 more sources

Numerical analysis and application of Nishihara creep nonlinear damage model considering ubiquitous joints

Tunnelling and Underground Space Technology
Haopeng Jiang, Annan Jiang
openaire   +3 more sources

Three-dimensional nonlinear Nishihara creep-Ubiquitous joint model considering high temperature effect

Thermal Science and Engineering Progress
Haopeng Jiang, Wei Yin, Kun Zhang, Fengrui Zhang   +3 more
openaire   +3 more sources