Results 81 to 90 of about 1,146,381 (249)

Energy evolution and damage analysis of true triaxial cyclic loading and unloading of sandstone at different rates

Meitan xuebao
To investigate the effects of different rates on the energy and damage evolution of sandstone during true triaxial cyclic loading and unloading damage, the true triaxial compression test, true triaxial primary loading and unloading test, and true ...
Qihang ZHANG, Xiangrui MENG, Guangming ZHAO, Wensong XU, Chongyan LIU, Zhixi LIU, Xukun WU, Minjie QI   +7 more
doaj   +1 more source

Generalized Matsuoka–Nakai criterion considering hydrostatic pressure dependence in the brittle–ductile region

Deep Underground Science and Engineering, EarlyView.
Three sets of strength data were selected, including hydrostatic pressure independent within the brittle region (HPI‐B), hydrostatic pressure dependent within the brittle region (HPD‐B), and hydrostatic pressure dependent within the brittle–ductile region (HPD‐BD). For HPI type, the failure envelope within the deviatoric plane remains constant.
Jiacun Liu, Junjie Xiao, Dongping Liu, Ying Xu   +3 more
wiley   +1 more source

Modified true triaxial Hoek-Brown criterion considering intermediate principal stress effect

Meitan kexue jishu
In order to improve the Hoek-Brown strength criterion not considering the influence of intermediate principal stress on rock strength, the evolutions of rock strength were investigated according to the results of the rock true triaxial compression test ...
Yapeng LI, Xiaosuo WU, Qiang ZHANG, Binsong JIANG   +3 more
doaj   +1 more source

The Effect of Intermediate Principal Stress on Compressive Strength of Different Cement Content of Cement-Stabilized Macadam and Different Gradation of AC-13 Mixture

Applied Sciences, 2018
Since the effect of intermediate principal stress on the strength of pavement materials is not entirely clear so far, a proprietary true triaxial apparatus was developed to simulate the spatial status of principal stresses to conduct compressive strength
Hong-xin Guan, Hao-qing Wang, Hao Liu, Jia-jun Yan, Miao Lin   +4 more
doaj   +1 more source

Phase space transport in cuspy triaxial potentials: Can they be used to construct self-consistent equilibria?

, 2000
(Abridged) This paper studies chaotic orbit ensembles evolved in triaxial generalisations of the Dehnen potential which have been proposed to model ellipticals with a strong density cusp that manifest significant deviations from axisymmetry. Allowance is
Arnold, Athanassoula, Bender, Binney, Byun, Chandrasekhar, Christos Siopis, Contopoulos, De Zeeuw, Dehnen, Gebhardt, Grassberger, Griner, Habib, Habib, Habib, Henry E. Kandrup, Häfner, Ipser, Kandrup, Kandrup, Kandrup, Kandrup, Kandrup, Kandrup, Kandrup, Kaufmann, Kormendy, Kormendy, Kormendy, Lauer, Lichtenberg, Lieberman, Lindenberg, Louis, Lynden-Bell, MacKay, Mahon, Mendes de Oliveira, Merritt, Merritt, Merritt, Merritt, Merritt, Moller, Perez, Pogorelov, Rechester, Schwarzschild, Schwarzschild, Sridhar, Udry, Vandervoort, Zepf, Zhao   +54 more
core   +3 more sources

Quasistatic rheology and the origins of strain [PDF]

, 2002
Published in special issue of "Comptes-Rendus Physique" on granular materialsInternational audienceFeatures of rheological laws applied to solid-like granular materials are recalled and confronted to microscopic approaches via discrete numerical ...
Combe, Gaël, Roux, Jean-Noël
core   +3 more sources

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

Glass Beads Test with True Triaxial Stress Path Achieved by Conventional Triaxial Apparatus

Fractal and Fractional
The impact of fabric anisotropy, fractal dimension, and breakage on the strength and deformation of granular materials were diminished by uniform-size spherical glass beads.
Xuefeng Li, Jiahui Ma, Longlong Lv
doaj   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source

The Strength Criterion for Rocks Under True Triaxial Stress

Procedia Structural Integrity, 2021
Abstract A new criterion has been developed for the strength of rocks in the condition of true triaxial stress. The criterion parameters are calculated based on the results of a complex determination of the ultimate strength, which includes uniaxial tensile, uniaxial compression and biaxial compression.
openaire   +1 more source