Results 51 to 60 of about 1,259,198 (268)

Modeling the gravitational potential of a cosmological dark matter halo with stellar streams [PDF]

, 2016
Stellar streams result from the tidal disruption of satellites and star clusters as they orbit a host galaxy, and can be very sensitive probes of the gravitational potential of the host system. We select and study narrow stellar streams formed in a Milky-
Hartke, Johanna, Helmi, Amina, Sanderson, Robyn E.   +2 more
core   +2 more sources

A Three-Dimensional Constitutive Model for Rocks Based on a Strain-Dependent Elastic Modulus

Lithosphere, 2022
Our research group previously proposed a simple two-dimensional (2D) constitutive model for rocks to simulate not only the axial stress–axial strain relationship, but also the axial stress–lateral strain relationship, with few complicated equations ...
Z. Li, Y. Fujii, J. Kodama, D. Fukuda, A. B. N. Dassanayake, P. Sinkala   +5 more
doaj   +1 more source

The dilatancy-diffusion hypothesis and earthquake predictability [PDF]

, 2012
The dilatancy-diffusion hypothesis was one of the first attempts to predict the form of potential geophysical signals that may precede earthquakes, and hence provide a possible physical basis for earthquake prediction.
Bell, A. F., Geiger, S., Main, I. G., Meredith, P. G., Touati, S.   +4 more
core   +1 more source

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

Advanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana, Indra Apsite, Leonid Ionov   +2 more
wiley   +1 more source

Mechanical parameter evolutions and deterioration constitutive model for ductile–brittle failure of surrounding rock in high-stress underground engineering

Underground Space
The deep surrounding rock is usually in the true triaxial stress state, and previous constitutive models based on the understanding of uniaxial and conventional triaxial test results have difficulty characterizing the degradation and fracture process of ...
Zhi Zheng, Ronghua Li, Qiang Zhang, Xiaohua Huang, Wei Wang, Shuling Huang   +5 more
doaj   +1 more source

Seismic behaviour of geotechnical structures [PDF]

, 2002
This paper deals with some fundamental considerations regarding the behaviour of geotechnical structures under seismic loading. First a complete definition of the earthquake disaster risk is provided, followed by the importance of performing site ...
Durham, Jo, Gouda, Hebe N., Rampatige, Rasika, Richards , Nicola C., Rodney, Anna, Whittaker, Maxine   +5 more
core   +3 more sources

Studies on Mechanical Properties and Failure Characteristics of Anisotropic Shale Under True Triaxial Loading at Real-Time High Temperature

Rock Mechanics and Rock Engineering
The efficient extraction of deep shale gas (burial depth > 3500 m) in challenging high-temperature and high-stress environments plays a pivotal role in advancing natural gas development. This study investigates how real-time high temperatures and bedding
Yingjie Xia, Yusheng Wang, Hai Yang, Danchen Zhao, Zhenyu Yin, Chun’an Tang, Jian Chen   +6 more
semanticscholar   +1 more source

Probability prediction of true‐triaxial compressive strength of intact rocks based on the improved PSO‐RVM model

Deep Underground Science and Engineering, EarlyView.
In this work, we propose an improved particle swarm optimization (PSO) algorithm and develop an improved PSO‐relevance vector machine (RVM) model as a substitute for traditional true‐triaxial testing. The model's high prediction accuracy was validated through comparisons with two other machine learning methods and five three‐dimensional Hoek–Brown type
Qi Zhang, Maohui Wang, Ning Wang, Yixin Shen, Xuzhen He   +4 more
wiley   +1 more source

Effect of confining pressure on fracture characteristics and mineralogical behavior of tight sandstone specimens after hydraulic fracturing

Deep Underground Science and Engineering, EarlyView.
Hydraulic fracturing in tight sandstone and fracture propagation characteristics using backscattered electron‐scanning electron microscope (BSE‐SEM) images. Abstract This study focuses on hydraulic fracturing experiments conducted under triaxial conditions on tight sandstone specimens from Shivpuri district, Madhya Pradesh, India.
Pankaj Rawat, Narendra Kumar Samadhiya
wiley   +1 more source

Temperature effect of rockburst in granite caverns: insights from reduced-scale model true-triaxial test

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
To investigate the influence of thermal treatment on the rockburst in granite caverns, true-triaxial compression tests were conducted on pre-heated granite cubic samples containing a circular through-hole using a true-triaxial test system, and the micro ...
Xuefeng Si, Yong Luo, F. Gong, Jiancheng Huang, Kaifeng Han   +4 more
semanticscholar   +1 more source