Results 111 to 120 of about 235,469 (330)

3d numerical model of a confined fracture tests in concrete [PDF]

, 2013
The paper deals with the numerical simulation of a confined fracture test in concrete. The test is part of the experimental work carried out at ETSECCPB-UPC in order to elucidate the existence of a second mode of fracture under shear and high compression,
Carol, Ignacio, López Garello, Carlos María, Montenegro, O., Sfer, D.   +3 more
core  

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

A New Look at Massive Clusters: weak lensing constraints on the triaxial dark matter halos of Abell 1689, Abell 1835, & Abell 2204

, 2008
Measuring the 3D distribution of mass on galaxy cluster scales is a crucial test of the LCDM model, providing constraints on the nature of dark matter. Recent work investigating mass distributions of individual galaxy clusters (e.g.
Andersson, Bacon, Bahcall, Bardeau, Bardeau, Bartelmann, Bett, Bradac, Bradac, Broadhurst, Broadhurst, Clowe, Clowe, Clowe, Clowe, Corless, Corless, Corless, Dahle, Diego, Dodelson, Douglas Clowe, Evrard, Gavazzi, Halkola, Hoekstra, Jing, Jullo, Kassiola, King, King, King, Kneib, Lemze, Lemze, Leonard, Lewis, Limousin, Lindsay J. King, Majerowicz, Marshall, Medezinski, Meneghetti, Miralda-Escude, Mobasher, Navarro, Neto, Oguri, Oguri, Oguri, Reiprich, Reiprich, Russell, Sanders, Schmidt, Schneider, Schramm, Seitz, Shaw, Smith, Umetsu, Virginia L. Corless, Wambsganss, Xue, Zhang, Łokas   +65 more
core   +1 more source

Analytical stress solution framework for lined compressed air energy storage chambers and its application to safe burial depth determination and supporting effectiveness evaluation

Deep Underground Science and Engineering, EarlyView.
An analytical framework delivers a closed‐form stress solution for lined compressed air energy storage chambers, enabling the determination of the minimum safe burial depth. The solution quantitatively evaluates lining support effectiveness, offering a reliable tool for chamber design and optimization.
Zeyuan Sun, Cheng Zhao, Jinquan Xing, Qinyuan Luo   +3 more
wiley   +1 more source

Peaks and dips in Gaussian random fields: a new algorithm for the shear eigenvalues, and the excursion set theory

, 2013
We present a new algorithm to sample the constrained eigenvalues of the initial shear field associated with Gaussian statistics, called the `peak/dip excursion-set-based' algorithm, at positions which correspond to peaks or dips of the correlated density
Rossi, Graziano
core   +3 more sources

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source

Mechanical Properties and Fracture Surface Morphology of Quartz Sandstone Under Triaxial Shear

工程科学与技术
To study the shear damage deformation characteristics of intact rock in rock slopes under three-dimensional compressive–shear stress conditions, 16 sets of triaxial shear tests were conducted on saturated intact fine-grained quartz sandstone with simple ...
Zhinan LIN, Shihong FENG, Jiaquan WANG, Qiang ZHANG, Haifeng LONG   +4 more
doaj  

A Novel True Triaxial Apparatus for Testing Shear Seepage in Gas-Solid Coupling Coal

Geofluids, 2018
To study the effects of shear stress on the mechanical and seepage properties of gas-bearing coal in three-dimensional stress conditions, a novel true triaxial apparatus (TTA) was developed for the rigid loading of the major principal stress σ1 and the ...
Gang Wang, Pengfei Wang, Yangyang Guo, Wenxin Li   +3 more
doaj   +1 more source

Behavior of Long‐Slotted Perforated Steel Plate Fuses in Timber Brace End Connections

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Steel perforated plate fuses have emerged as a promising solution for mass timber seismic force‐resisting systems, offering tunable energy dissipation mechanisms, such as flexural and shear yielding, through geometric adjustments. This study examines the cyclic performance of perforated steel plate fuses employed in timber braced frames, with ...
Yahia Ahmed, Hossein Daneshvar, Ying Hei Chui   +2 more
wiley   +1 more source

Testing noncohesive geogrid-reinforced soil in triaxial shear apparatus under cyclic loading [PDF]

, 2021
Stjepan Lakušić
openalex   +1 more source