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Determination method of rock characteristic stresses based on the energy growth rate
Frontiers in Earth Science, 2023 Introduction: Precisely determining the characteristic stress value of a rock progressive failure process has important theoretical and practical significance for reasonably defining the rock deformation and failure stage, mechanical mechanism, and ...
Xiaohui Liu +6 more
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Beyond Directions: Symmetry-Aware Rotation Sets for Triaxial Diffusion Encoding by Geometric Filter Optimization. [PDF]
Magn Reson MedABSTRACT Purpose To improve the accuracy of diffusion‐weighted powder average signals for diffusion encoding with arbitrary b‐tensors. Methods We identify an intrinsic dihedral (D2) symmetry of diffusion signals for arbitrary diffusion encoding, which defines their natural signal space (a quotient of 3D rotations). Based on this, we propose a method to
Jespersen SN, Szczepankiewicz F.
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Railway ballast anisotropy testing via true triaxial apparatus [PDF]
, 2020 This paper aims to demonstrate the anisotropic behaviour of railway ballast via true-triaxial tests. To do so, a novel, large-scale, true-triaxial testing apparatus (GeoTT) is designed and constructed.
Woodward PK +4 more
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Meitan xuebao, 2023 Deep coal is mostly in a three-dimensional unequal stress state. In order to study the dynamic characteristics of coal under impact load, the dynamic failure mechanics experiment of coal was carried out by true triaxial Hopkinson experimental system ...
Rongxi SHEN +5 more
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Aeolian Sand Test with True Triaxial Stress Path Achieved by Pseudo-Triaxial Apparatus
, 2023 Aeolian sand is a special roadbed filler, but its three-dimensional mechanical properties are rarely studied. To obtain the characteristic of its deformation, strength on the deviatoric plane, and failure in three dimensions, a series of triaxial drained
Xuefeng Li, Zhigang Ma
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Mechanical and Energy Evolution Characteristics of Sandstone under True Triaxial Cyclic Loading
, 2023 To study the mechanical and energy evolution characteristics of sandstone under true triaxial cyclic loading, a sandstone mechanical test with different intermediate principal stress under true triaxial loading was conducted using the rock true triaxial ...
Minjie Qi +5 more
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True triaxial tests on transversely isotropic unsaturated loess
Yantu gongcheng xuebao, 2022 In order to study the mechanical properties of transversely isotropic unsaturated remolded loess under complex stress paths, two groups of 15 tests are carried out using the true triaxial apparatus.
GUO Nan 1, CHEN Zheng-han 1, 2, YANG Xiao-hui 1, GAO Deng-hui 3
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工程科学与技术, 2022 The true triaxial apparatus is an ideal instrument to study the mechanical properties of soil under complex stress state, but how to keep the loading structure and soil without friction and independent loading in three directions is the technical ...
Yanli WANG +4 more
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Design and fabrication of a low cost true triaxial cell for testing multiple size specimens
, 2012 Only a true triaxial cell has the ability to recreate 3D in situ stress conditions. Therefore a true triaxial cell was designed and fabricated. The cell was calibrated to ensure the lateral strains on the specimen were known during testing, and a ...
Schwartzkopff, A. +3 more
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Digital Rock Mechanical Properties by Simulation of True Triaxial Test: Impact of Microscale Factors
Geotechnics, 2023 Complex fractures and pore structures in the rock strongly influence the mechanical properties, and the process from compression to failure is complicated.
Wenjie Ma +9 more
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