Results 31 to 40 of about 1,462,254 (143)

A generalized nonlinear three-dimensional Hoek‒Brown failure criterion

Journal of Rock Mechanics and Geotechnical Engineering
To understand the strengths of rocks under complex stress states, a generalized nonlinear three-dimensional (3D) Hoek‒Brown failure (NGHB) criterion was proposed in this study.
Jiaxin Wang, Shunchuan Wu, Haiyong Cheng, Junlong Sun, Xiaolong Wang, Yaxi Shen   +5 more
doaj   +1 more source

Implications of Geo-stress Tensor Characteristics in Optimizing the Azimuth of Underground Cavern

工程科学与技术, 2021
High stress is the controlling factor that influencing the deformation mechanism and stability of surrounding rock mass of deep-seated underground caverns.
Bo LU, Yufeng ZHANG, Aiqing WU, Zhihong DONG   +3 more
doaj  

AI‐BioMech: Deep Learning Prediction of Mechanical Behavior in Aperiodic Biological Cellular Materials

Advanced Intelligent Discovery, EarlyView.
AI‐BioMech is a deep learning framework that predicts the mechanical behavior of biological cellular materials directly from 2D images. By replacing traditional finite element analysis with semantic segmentation, it identifies stress and strain distributions with 99% accuracy, offering a high‐speed, scalable alternative for analyzing complex, aperiodic
Haleema Sadia, Marcelo A. Dias, Parvez Alam   +2 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

Multimodal Imaging of Strain and Light Emission of Core–Shell InGaN/GaN Wires under a Sub‐Micrometer Polychromatic X‐Ray Probe

Advanced Materials Interfaces
We present a combination of µLaue X‐ray diffraction and X‐ray excited optical luminescence (XEOL) techniques to map local strain, orientation, and light emission in metalorganic vapor phase epitaxy (MOVPE) core–shell InGaN/GaN multiple quantum wells (MQW)
Beatriz deGoes Foschiani, Sergio Bongiorno, Odile Robach, Olivier Ulrich, Jean‐Sébastien Micha, Joël Eymery   +5 more
doaj   +1 more source

Creep properties and constitutive model of diabase in deep water conveyance tunnels

Deep Underground Science and Engineering, EarlyView.
The axial and lateral creep characteristics of diabase were analyzed based on compression creep tests. The nonlinear viscoelastic‐plastic model capable of describing the whole creep process was established based on the fractional derivative and damage theories.
Zhigang Tao, Pengxiao Guan, Xiaojie Yang, Keyuan Liu, Mingjiu Cai, Hong Yang   +5 more
wiley   +1 more source

DEM SIMULATIONS OF QUASI-STATIC SHEAR DEFORMATION OF GRANULAR MEDIA

TASK Quarterly, 1998
Results are presented of numerically simulated three dimensional quasi-static shear deformation of polydisperse systems of spheres. Results of axisymmetric compression test simulations are reported for both dense and loose systems.
COLIN THORNTON
doaj  

Laboratory test on three-dimensional stress state of the surrounding soil during tunnel excavation

Underground Space
During tunnel excavation, the surrounding soil experiences complex stress redistribution, which is the root cause of the ground deformation and other engineering disasters.
Yu Tian, Hao Chen, Junquan Wen, Abdul Motalleb Qaytmas, Dechun Lu, Xiuli Du   +5 more
doaj   +1 more source

Normal red blood cells’ shape stabilized by membrane’s in-plane ordering

Scientific Reports, 2019
Red blood cells (RBCs) are present in almost all vertebrates and their main function is to transport oxygen to the body tissues. RBCs’ shape plays a significant role in their functionality.
L. Mesarec, W. Góźdź, A. Iglič, V. Kralj-Iglič, E. G. Virga, S. Kralj   +5 more
semanticscholar   +1 more source

Study on fracture parameter calibration and failure characteristics of rock with hole and crack

Deep Underground Science and Engineering, EarlyView.
The SIF and plastic zone equations for a single hole and crack have been derived. The model's failure state leads to the identification of four types of cracks. The plastic zone increases with increased brittleness and decreased crack length. Abstract Cracks within the surrounding rock of roadways significantly affect their stability and failure ...
Shaochi Peng, Wensong Wang
wiley   +1 more source