Results 41 to 50 of about 521,909 (335)

Study of intermediate principal stress effect on progressive damage and permeability characteristics of unloading sandstone

Meikuang Anquan
In order to investigate the effect of intermediate principal stress on the progressive damage and permeability characteristics of unloading sandstone, the unloading test was carried out under different intermediate principal stress conditions based on a ...
Jiahui DU, Wenpu LI, Yue CHANG, Ze WANG, Tao WANG   +4 more
doaj   +1 more source

A Simple Solution and Dilatancy Characterization for a Circular Tunnel Excavated in the Nonlinear Strain-Softening and Nonlinear Dilatancy Rock Mass

Advances in Civil Engineering, 2023
Tunnel opening or excavation in the strain-softening rock masses primarily leads to initial stress release and rock deformation. The increasing plastic shear strain induces a nonlinear variation of dilatancy in rock masses. Therefore, tunnel stability is
Xiuling Wang
doaj   +1 more source

Incremental response of a model granular material by stress probing with DEM simulations [PDF]

, 2009
International audienceWe use DEM simulations on a simple 2D model of a granular material to test for the applicability of elastoplasticity (yield criterion, flow rule) to the response to stress increments of arbitrary directions.
Froiio, Francesco, Roux, Jean-Noël
core   +3 more sources

Elastic–plastic criterion solution of deep roadway surrounding rock based on intermediate principal stress and Drucker–Prager criterion

Energy Science & Engineering
Excavation‐induced rock failure and deformation near an underground opening boundary is closely associated with the intermediate principal stress, strain softening and rock mass dilation.
Xinfeng Wang, Youyu Wei, Tian Jiang, Fuxu Hao, Haofu Xu   +4 more
semanticscholar   +1 more source

Seepage Flow Properties of a Columnar Jointed Rock Mass in a True Triaxial Experiment

Geofluids, 2021
A columnar jointed rock mass is a type of rock mass with strong geometric anisotropy and high interface permeability. Its seepage characteristics pose new challenges to the construction and maintenance of the Baihetan Hydropower Station on the Jinsha ...
Yanxin He, Zhende Zhu, Wenbin Lu, Yunjin Hu, Xinghua Xie, Sijing Wang   +5 more
doaj   +1 more source

Failure in Confined Brazilian Tests on Sandstone

Applied Sciences, 2021
Strength of rocks in the confined tension region, where the minimum principal stress is tensile, has only infrequently been measured and is not well understood. Quasi-static confined Brazilian tests under a range of confining stresses (2.76 to 27.58 MPa)
Tyler Hagengruber, Mahmoud Reda Taha, Esteban Rougier, Earl E. Knight, John C. Stormont   +4 more
doaj   +1 more source

Analysis of the flowability of cohesive powders using Distinct Element Method [PDF]

, 2005
Computer simulations using Distinct Element Method (DEM) have been carried out to investigate the effect of cohesion on the flowability of polydisperse particulate systems. For this purpose, two assemblies with different values of surface energy and made
Antony, SJ, Ghadiri, M, Moreno-Atanasio, R   +2 more
core   +1 more source

Mechanical properties and constitutive model of artificial frozen sandy soils under true triaxial stress state conditions

Case Studies in Thermal Engineering
Triaxial compression tests were conducted on frozen sandy soils under a constant minimum principal stress (σ3 = 1.6 MPa) and various intermediate principal stresses (σ2 = 1.6, 3.4, 5.2, 7.0, 8.8, 9.8 MPa).
Kun Huang, Haoran Tang, Dongdong Ma, Hongpeng Zhang, Zhaolin Li, Kai Huang, Jian Lin   +6 more
doaj   +1 more source

Analysis of Three-Dimensional Damage Constitutive Model of Frozen Sand Based on the Influence of Intermediate Principal Stress and Temperature

Advances in Civil Engineering, 2020
To study the mechanical properties of frozen soil, it is necessary to understand the damage characteristics of frozen soil. Four types of three-dimensional indoor tests of frozen sand were carried out at −5°C, −10°C, and −15°C to study the mechanical ...
Shilong Ma, Zhaoming Yao, Shuang Liu, Xuan Pan   +3 more
doaj   +1 more source

Seismic Active Earth Pressure of Limited Backfill with Curved Slip Surface Considering Intermediate Principal Stress

Applied Sciences, 2021
The traditional method for seismic earth pressure calculation has certain limitations for retaining structures under complex conditions. For example, when the soil width is small, the results obtained by the traditional method will be much larger ...
Hui Liu, Dezhi Kong, Wensong Gan, Bingjie Wang   +3 more
semanticscholar   +1 more source