Results 21 to 30 of about 1,913 (181)
矿业科学学报, 2020 A new approach is provided to study the growth problems of mode Ⅰ and mode Ⅰ-Ⅱ mixed cracks, Split Hopkinson Pressure Bar(SHPB) is used to impact the PMMA USH(Unilateral semicircular hole) specimen containing precast crack.Results of mode Ⅰ cracks and ...
Li Chengxiao, Zhang Yuantong, An Chen
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Dynamic characteristics and constitutive model of coal samples with different length diameter ratio
矿业科学学报, 2023 In order to study the dynamic performance of coal samples with different length diameter ratio under impact load, this paper used an improved Hopkinson compression bar experimental device (ϕ75 mm), and carried out the impact compression experiments under
Xie Beijing +3 more
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Experimental research on dynamic mechanics of early age concrete
矿业科学学报, 2020 The single and double impact experiments were carried out on C20 and C40 concrete at five different ages using a 75 mm SHPB experimental device.The mechanical properties of early age concrete under impact loading were systematically studied from two ...
Li Shenglin +3 more
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Yantu gongcheng xuebao, 2022 To explore the energy dissipation law and failure mode of soft rock interlayer in western mining areas of China after dynamic disturbance, the dynamic impact failure tests on weakly cemented red sandstone are carried out by using the separated Hopkinson ...
ZHANG Hui-mei 1, CHEN Shi-guan 2, WANG Lei 2, CHENG Shu-fan 3, YANG Geng-she 2, SHEN Yan-jun 4
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Yantu gongcheng xuebao, 2022 The skarn at a depth of 700 m is taken as the research object to study the dynamic behaviors of deep rocks under high temperature. The impact compression tests at different impact air pressures (0.8, 1.0 and 1.2 MPa) are carried out on the skarn at room ...
LIU Lei 1, LI Rui 1, QIN Hao 1, LIU Yang 2
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Correction to : Estimating Measurement Uncertainty on Stress-Strain Curves from SHPB [PDF]
Experimental Mechanics, 2020 Equation (12) in the original article [1] gives the strain from the measured voltage on a full bridge configuration of the four strain gages. The full-bridge is intended to measure tension-compression strain (type III full-bridge), the correct equation is therefore [2]
Brizard, Denis +2 more
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Energy dissipation of rock specimens under high strain rate with single joint in SHPB tensile tests
Yantu gongcheng xuebao, 2017 The energy dissipation in single jointed rocks under high strain rate is investigated by the split-Hopkinson pressure bar (SHPB) technique. The dynamic split tensile tests on both intact granite specimens and man-made single jointed granite specimens ...
LI Miao , QIAO Lan , LI Qing-wen
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Metals, 2019 Iron−nickel based ultra-high strength steel (wt. 18~20% Ni) is characterized by its high strength and low thermal conductivity, and is normally used to make key components by forming and machining processes.
Hongge Fu +7 more
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Research on damage viscoelastic dynamic constitutive model of granite
矿业科学学报, 2019 Dynamic mechanical properties of granite were tested by a split Hopkinson pressure bar system with constant strain rate.The initial loading stage of stress-strain curve of granite is linear elasticity, and the rock material has a significant plastic ...
Ling Tianlong +3 more
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SSM - Health SystemsBackground: Promoting workplace sense of belonging (WSB) is suggested to improve the wellbeing and retention of clinical support staff (CSS), a critical group in healthcare systems. This comparative thematic analysis explored how CSS with and without WSB
Petra J. Sprik +6 more
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