Results 41 to 50 of about 1,050 (161)

Processing‐Centric Innovative Strategies for Protonic Ceramic Electrochemical Cells

open access: yesAdvanced Energy Materials, Volume 16, Issue 29, 5 August 2026.
This review reveals how processing‐centric fabrication strategies govern architecture, microstructure, and interfaces in protonic ceramic electrochemical cells (PCECs), establishing a framework that translates materials innovation into scalable PCEC technologies.
Dongyeon Kim   +5 more
wiley   +1 more source

تحلیل پایداری مغارهای نیروگاه سد بختیاری با استفاده از نرم افزار 3DEC [PDF]

open access: yesAnalytical and Numerical Methods in Mining Engineering, 2014
امروزه فضاهای بزرگ زیرزمینی به جهت استفاده متعدد در پروژه های استراتژیک شامل نیروگاههای برق­آبی، ذخیره سازی نفت و گاز، دفن زباله‌های اتمی و غیره از اهمیت فراوانی برخوردارند. لذا بررسی پایداری آنها نیز به دلیل ابعاد بزرگ و وسیع حائز اهمیت می‌‌باشد. در این
بیژن دهقانی   +2 more
doaj  

Nonlinear Response‐History Analyses of Masonry and Mixed Structures With HybriDFEM

open access: yesEarthquake Engineering &Structural Dynamics, Volume 55, Issue 8, Page 1694-1709, 10 July 2026.
ABSTRACT The hybrid discrete‐finite element (HybriDFEM) method, previously developed to perform static and modal analysis in discrete and coupled discrete‐finite element models, is extended to nonlinear response‐history analyses. The equations of motion for the HybriDFEM model are solved through various numerical time‐integration schemes, both explicit
Igor Bouckaert   +2 more
wiley   +1 more source

Physical model test and numerical simulation on the failure mechanism of the roadway in layered soft rocks

open access: yesInternational Journal of Mining Science and Technology, 2021
To explore the failure mechanism of roadway in layered soft rocks, a physical model with the physically finite elemental slab assemblage (PFESA) method was established.
Xiaoming Sun   +5 more
doaj   +1 more source

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

open access: yesDeep Underground Science and Engineering, Volume 5, Issue 2, Page 597-614, June 2026.
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

Mechanism of Coal Seam Permeability Enhancement and Gas Outburst Prevention under Hydraulic Fracturing Technology

open access: yesGeofluids, 2022
In view of the high gas pressure and low permeability of deep coal seam, it is difficult to control gas, which affects the safety production of coal mine.
Xinhua Wu   +5 more
doaj   +1 more source

Calibration of Micromechanical Parameters for the Discrete Element Simulation of a Masonry Arch using Artificial Intelligence

open access: yesInfrastructures, 2023
This study focuses on an old but still unresolved problem of automatically calibrating the constitutive parameters of discrete element models. Instead of the troublesome and time-consuming manual trial-and-error method, which is typical today, the ...
Ghulam Kibriya   +3 more
doaj   +1 more source

Research on the Laws of Destructive Patterns and Control Measures of Overlying Rock in High‐Efficiency Large‐Scale Mining Faces

open access: yesEnergy Science &Engineering, Volume 14, Issue 4, Page 1851-1863, April 2026.
With the advancement of coal mining technology driving the development of working faces toward increased mining heights and extended lengths, the enlargement of face dimensions has led to expanded overlying strata failure zones and intensified ground pressure manifestations. Consequently, traditional methods for determining hydraulic support resistance
Chen Gong   +5 more
wiley   +1 more source

Failure mechanism of the coal wall at the working face based on an eccentric compression mechanical model

open access: yesDeep Underground Science and Engineering, Volume 5, Issue 1, Page 127-143, March 2026.
In this study, the nonuniform distribution of the bearing pressure in front of the coal wall has been revealed based on in situ monitoring data and numerical simulation results. Therefore, an eccentric compression mechanical model of the coal wall was established to study the deformation and failure characteristics of a coal wall. The slenderness ratio
Maolin Tian   +6 more
wiley   +1 more source

Evaluation of the Active Support and Yielding Bearing Properties of Artificial Pillars Supporting a Stope Roof Using 3DEC Numerical Simulation

open access: yes, 2019
Before achieving yielding support with artificial pillars, it is significant to evaluate their active support and passive bearing performances on the stope roof.
Kunmeng Li, Yuanhui Li, Hongdi Jing
core   +1 more source

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