Results 11 to 20 of about 4,007,583 (304)

A Simple Three-Dimensional Failure Criterion for Jointed Rock Masses under True Triaxial Compression

open access: yesAdvances in Civil Engineering, 2021
The joint configuration and the intermediate principal stress have a significant influence on the strength of rock masses in underground engineering. A simple three-dimensional failure criterion is developed in this study to predict the true triaxial ...
Yaohui Gao   +3 more
doaj   +1 more source

Prediction of the Stability of Various Tunnel Shapes Based on Hoek–Brown Failure Criterion Using Artificial Neural Network (ANN)

open access: yesSustainability, 2022
In this paper, artificial neural network (ANN) models are presented in order to enable a prompt assessment of the stability factor of tunnels in rock masses based on the Hoek–Brown (HB) failure criterion.
T. Jearsiripongkul   +3 more
semanticscholar   +1 more source

The Formulation of the Quadratic Failure Criterion for Transversely Isotropic Materials: Mathematical and Logical Considerations

open access: yesJournal of Composites Science, 2022
The quadratic function of the original Tsai–Wu failure criterion for transversely isotropic materials is re-examined in this paper. According to analytic geometry, two of the troublesome coefficients associated with the interactive terms—one between in ...
Shuguang Li, Mingming Xu, E. Sitnikova
semanticscholar   +1 more source

Study on failure modes of a new staggered story isolated structure based on IDA method

open access: yesFrontiers in Earth Science, 2023
New staggered story isolated structure is a new type of isolated system. This paper explores the failure mode of a new staggered story isolated structure with the increment dynamic analysis (IDA) method.
Lihao Chen   +7 more
doaj   +1 more source

An Extension Failure Criterion for Brittle Rock

open access: yesAdvances in Civil Engineering, 2020
Under the triaxial compressive state, the compressive strain is supposed to happen in the direction of the maximum principal stress, but tensile strain happens in the direction of the minimum principal stress.
Aizhong Lu, Ning Zhang, Guisen Zeng
doaj   +1 more source

The Hoek–Brown failure criterion and GSI – 2018 edition

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2019
The Hoek–Brown criterion was introduced in 1980 to provide input for the design of underground excavations in rock. The criterion now incorporates both intact rock and discontinuities, such as joints, characterized by the geological strength index (GSI),
E. Hoek, E. Brown
semanticscholar   +1 more source

Crack Cause in the High Slope of Chinese Ancient Copper Mine Relics: A Three-Dimensional Non-Linear Finite Difference Analysis

open access: yesIEEE Access, 2020
Preservation of world heritage and archaeological sites depends largely on better understanding of the soil and rock conditions and their alterations caused by natural and anthropogenic forces. This study took the Tonglushan Ancient Copper Mine (TACM), a
Bin Hu   +3 more
doaj   +1 more source

Investigation of the anisotropic mechanical response of layered shales

open access: yesEnergy Science & Engineering, 2023
Layered shales exist widely and are often encountered during shale gas development. However, the mechanical response of layered shales is significantly affected by the existence of beddings, resulting in the obvious anisotropy characteristics regarding ...
Min Gao   +4 more
doaj   +1 more source

Cross-isotropic strength criteria based on spatial plane variation

open access: yesYantu gongcheng xuebao, 2022
The geotechnical materials in nature are affected by the natural sedimentation and often have significant cross-isotropic characteristics. The difference in strength and deformation of structural units of soil in different directions is the main issue ...
XU Ping 1, SHAO Sheng-jun 2, FANG Ling-yun 1, SUN Zhi-jun 1
doaj   +1 more source

Thermal coupling analysis of lightning strike laminates

open access: yesJournal of Aeronautical Materials, 2020
In order to study the ablation damage mechanical properties of composite laminated plate under the action of lightning current, a thermal-mechanical coupling finite element analysis model of composite lightning strike was established. The validity of the
LU Xiang   +3 more
doaj   +1 more source

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