Results 71 to 80 of about 12,650 (263)
Exploring wave propagation behaviors in rock: A grain‐based perspective on mineral structures
Deep Underground Science and Engineering, EarlyView.This study investigates wave propagation in rock at the grain scale using a grain‐based model, revealing that mineral elastic modulus significantly influences wave attenuation while grain size and distribution have limited effects. A novel peak particle velocity attenuation prediction model is proposed and validated for grain‐scale wave propagation ...
Zhiyi Liao +3 more
wiley +1 more source
INSTRUMENTATION OF SPLIT HOPKINSON PRESSURE BAR FOR TESTING OF CELLULAR METALLIC MATERIALS
Acta Polytechnica CTU Proceedings, 2018 This paper presents an overview of the custom design instrumentation of a Split Hopkinson Pressure Bar modified for dynamic testing of materials with low mechanical impedance, particularly for cellular metallic materials (e. g.
Jan Falta, Petr Zlámal, Marcel Adorna
doaj +1 more source
Quasi-static and high strain rate response of aluminum matrix syntactic foams under compression [PDF]
, 2015 Aluminum alloy matrix syntactic foams were produced by inert gas pressure infiltration. Four different alloys and ceramic hollow spheres were applied as matrix and filler material, respectively. The effects of the chemical composition of the matrix and
Cortes, Pedro +3 more
core +1 more source
Deep Underground Science and Engineering, EarlyView.The spiral conical perforations generated during methane in situ explosion fracturing operations lead to tensile fracture propagation in shale reservoirs being governed by the combined effects of impact pressure, bedding, and aperture under explosive loading. Using multiple regression analysis and digital image correlation technology, the mechanisms of
Yabo Chai +7 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang +4 more
wiley +1 more source
Numerical Simulation of Split-Hopkinson Pressure Bar Test on High-Density Polyethylene
Chemical Engineering Transactions, 2018 This paper attempts to provide new insights into the engineering application of high-density polyethylene (HDPE) under impact load and the development of HDPE materials.
Shou Chen
doaj +1 more source
Experimental Study of the Rock Mechanism under Coupled High Temperatures and Dynamic Loads
Advances in Civil Engineering, 2020 With the development of modern society, geomaterials are widely used for infrastructure. These materials often experience dynamic loading and high temperature, which significantly influences the mechanical behaviour of the materials.
Huaming An +3 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu +8 more
wiley +1 more source
International Journal of Mining Science and Technology, 2021 The stability of cemented paste backfill (CPB) is threatened by dynamic disturbance, but the conventional low strain rate laboratory pressure test has difficulty achieving this research purpose.
Xin Chen +5 more
doaj +1 more source
Modelling split-Hopkinson pressure bar tests on quartz sand [PDF]
, 2015 FE modelling of a confined split Hopkinson pressure bar (SHPB) test on dry quartz sand was carried out using LS-DYNA in order to assess whether Material Model 5 could replicate experimental results, which would enable a more detailed investigation of ...
Barr, A. +3 more
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