Results 81 to 90 of about 14,285 (229)

FE2 evaluation of stress triaxiality / lode angle dependencies of void growing processes [PDF]

, 2019
This document provides information and instructions for preparing a Full Paper to be included in the Proceedings of COMPLAS 2019 ...
Matsui, Kazumi, Nakamura, Shintaro, Suzuki, Sho, Yamada, Takahiro   +3 more
core  

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

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

Dark matter response to galaxy formation [PDF]

, 2010
We have resimulated the six galaxy-sized haloes of the Aquarius Project including metal-dependent cooling, star formation and supernova feedback. This allows us to study not only how dark matter haloes respond to galaxy formation, but also how this ...
Abadi, Ascasibar, Barnes, Barnes, Bertschinger, Blumenthal, Boylan-Kolchin, Cecilia Scannapieco, Debattista, Diemand, Dubinski, Dubinski, Dutton, Eggen, Einasto, Evrard, Flores, Frenk, Gao, Gnedin, Hansen, Hayashi, Helmi, Jing, Katz, Kazantzidis, Koopmans, Kuijken, McGaugh, Mo, Moore, Mosconi, Navarro, Navarro, Navarro, Navarro, Oñorbe, Patricia B. Tissera, Pedrosa, Pedrosa, Power, Rasia, Romano-Díaz, Sackett, Salucci, Sand, Scannapieco, Scannapieco, Scannapieco, Scannapieco, Sellwood, Simon D. M. White, Springel, Springel, Susana Pedrosa, Taylor, Tissera, Vass, Vogelsberger, Weijmans, Young, Zeldovich   +61 more
core   +2 more sources

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

Energy evolution and damage analysis of true triaxial cyclic loading and unloading of sandstone at different rates

Meitan xuebao
To investigate the effects of different rates on the energy and damage evolution of sandstone during true triaxial cyclic loading and unloading damage, the true triaxial compression test, true triaxial primary loading and unloading test, and true ...
Qihang ZHANG, Xiangrui MENG, Guangming ZHAO, Wensong XU, Chongyan LIU, Zhixi LIU, Xukun WU, Minjie QI   +7 more
doaj   +1 more source

An Extension Failure Criterion for Brittle Rock

Advances 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 mechanics of fibre-reinforced sand [PDF]

, 2010
Fibres can be an effective means of reinforcing soils. This paper presents data from laboratory triaxial tests on quartzitic sand reinforced with polypropylene fibres.
Baudet, BA, Consoli, NC, Dos Santos, APS
core   +1 more source

Study on the Law of Multi‐Fracture Propagation in Different Fracturing Fluid Viscosity

Energy Science &Engineering, EarlyView.
Samples and equipment Sample preparation Test equipment Analysis of test results Fracture propagation morphology Influence of fracturing fluid viscosity on crack initiation time/(fracture initiation pressure) Evolution law of injection pressure Cumulative relation curve of pressure–time–acoustic ABSTRACT Using the TCHFSM‐I large‐scale accurate triaxial
Zhixing Zhang, Xiang Fu, Yuedong Liu, Xiaoqiang Zhang, Yulong Jiang   +4 more
wiley   +1 more source

Development of experimental concepts for investigating the strength behavior of fine-grained cohesive soil in the Spacelab/space shuttle zero-g environment [PDF]

Three different sets of tests are proposed for the NASA Spacelab experimental program. The first of tests, designed to measure the true cohesion of several different soils, would be carried out in space through use of a specially prepared direct shear ...
Bonaparte, R., Mitchell, J. K.
core   +1 more source