Results 91 to 100 of about 1,146,381 (249)
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 +2 more
wiley +1 more source
Effect of Intermediate Principal Stress on the Strength, Deformation, and Permeability of Sandstone
Energies, 2018 Although the mechanical behaviors and flow aspects of sandstone have been previously investigated, studies of the effect of the intermediate principal stress (σ2) on the strength, deformation, and permeability of sandstone are lacking. In this work,
Zhenlong Song +5 more
doaj +1 more source
Experimental investigation on the deformation characteristics of granular materials under drained rotational shear [PDF]
, 2015 Rotational shear is the type of loading path where samples are subjected to cyclic rotation of principal stress directions while the magnitudes of principal stresses are maintained constant.
Li, X, Wanatowski, D, Yang, LT, Yu, HS
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 +4 more
wiley +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 +5 more
core +3 more sources
Research on Precise Identification of Rock Strength Based on Bolt Drilling Parameters
Energy Science &Engineering, EarlyView.Drilling detection test platform. ABSTRACT During roadway excavation, the presence of weak interlayers and fractured rock masses significantly affects roof stability. To achieve timely and effective roadway support, it is crucial to identify and predict different rock types based on drilling signals from roof bolters.
Qiang Zhu +4 more
wiley +1 more source
Experimental research on supercritical CO2 true triaxial pneumatic fracturing
, 2023 Abstract The application of supercritical CO2 pneumatic fracturing technology to the development of shale gas and coalbed methane was explored. Experimental tests were conducted using the first true triaxial SC-CO2 pneumatic fracturing experimental system, and the effects of initial air pressure and energy-accumulation agent dosage on pressure ...
Xiaofei Wang, Enyuan Wang, Shaobin Hu
openaire +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.
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A new smooth failure criterion for concrete inspired by Lubliner's condition
Structural Concrete, EarlyView.Abstract A new failure criterion with 10 parameters is proposed, based on Lubliner's idea of joining two Drucker–Prager cones. The novelty lies in the way of introducing deviatoric shape variation: through two Podgórski's functions. This feature allows for improving plane stress cross‐section's compatibility with experimental data.
Inez Kamińska, Aleksander Szwed
wiley +1 more source
Meitan xuebaoIn the process of deep coal mining, the unloading stress path and unloading rate of deep rock are complicated and changeable due to the influence of excavation and unloading.
Zhixi LIU +3 more
doaj +1 more source