Results 21 to 30 of about 3,979 (211)
Experiment study on water-saturated coals after microwave treatment under impact loading
Meikuang Anquan, 2021 The water-saturated coal samples were heated by microwave for 0 s, 50 s, 125 s and 200 s, respectively. After that, a test system consisting of SHPB and high-speed photography apparatus was adopted to study the variation of mechanical parameters, the ...
YAO Junhui +4 more
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A method of incident pulse shaping for SHPB [PDF]
WIT Transactions on The Built Environment, 2014 The split Hopkinson pressure bar (SHPB) testing method has been widely used to obtain dynamic compression properties of solid materials. In the experiment, the state of dynamic stress equilibrium and deforming at a nearly constant strain rate over most of the test duration should be achieved. Therefore, pulse shaping techniques are usually needed.
G. Chen, Q. P. Zhang, X. C. Huang
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Experimental Study on Mechanical Properties of Coal Rock Under Impact Load
Meikuang Anquan, 2020 In order to study the dynamic mechanical properties of hard coal and rock in northern Shaanxi Province, the basic dynamic and static tests of coal and rock specimens were carried out by using stress loading system and split Hopkinson pressure bar (SHPB)
ZHANG Jiafan, GAO Zhuang, CHENG Shufan, ZHANG Huimei
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Dynamic failure characteristics of primary coal-rock combination under hydrostatic pressure
Meitan xuebao, 2023 The surrounding rock of deep roadway is weak and the fissures are developed. Under the influence of mining disturbance, it is easy to cause dynamic disasters and the overall instability failure of coal rock combination is one of key factors inducing ...
Beijing XIE +4 more
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Experimental study on dynamic mechanical behavior of frozen sandstone with different saturations
Meitan kexue jishu, 2023 Water content is one of the critical factors affecting frost damage to rock masses in alpine regions. A dynamic disturbance load further complicates the issue.
Junce XU, Hai PU, Ziheng SHA
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Meitan kexue jishu, 2023 Deep buried rock is often in a non-hydrostatic initial ground stress field, and the different stress states lead to different rock response under dynamic loading.
Shizheng FANG +4 more
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Energy dissipation and crushing characteristics of coal-rock-like combined body under impact loading
Yantu gongcheng xuebao, 2020 The impact compression tests on a single coal-like body, a rock-like body and a combined coal-rock-like body are carried out by using the split Hopkinson pressure bar (SHPB).
LI Cheng-jie 1, XU Ying 1, 2, YE Zhou-yuan 3
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Pulse shaping with soft material for SHPB [PDF]
SCIENTIA SINICA Technologica, 2016 In the split Hopkinson pressure bar (SHPB) experiment, the state of dynamic stress equilibrium should be achieved over most of the test duration. Therefore, pulse shaping techniques which can modify the profile of the incident pulse are usually needed. In this paper, a new method for SHPB incident pulse shaping is presented.
QingPing ZHANG, XiCheng HUANG, Gang CHEN
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Caustics experimental study on the interaction between moving cracks and voids under impact loading
矿业科学学报, 2022 In order to study the fracture characteristics of semi-disc specimens with circular defects under different impact speeds, Hopkinson rod is used to dynamically load the semi-disc specimen, and the fracture process of the semi-disc specimen is observed by
Luo Haohao +4 more
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Polypropylene foam behaviour under dynamic loadings: Strain rate, density and microstructure effects [PDF]
, 2009 Expanded polypropylene foams (EPP) can be used to absorb shock energy. The performance of these foams has to be studied as a function of several parameters such as density, microstructure and also the strain rate imposed during dynamic loading.
LATAILLADE, Jean-Luc +2 more
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