Results 41 to 50 of about 6,265 (226)

Dynamic characteristics of combined coal rock based on RSM–BBD

Meitan kexue jishu
The inherent instability of deep coal rock masses and coal-rock composite bearing structures significantly contributes to coal rock dynamic disasters in mines.
Beijing XIE, Zheng LUAN, Heng LI, Bowen WU, Xiaoxu LI, Changhao CHENG   +5 more
doaj   +1 more source

Influence of loading and unloading effect on mechanical properties of impact rock under impact load

Meitan xuebao
In order to study the effect of basic roof period pressure on the dynamic characteristics of impact pillar, one-dimensional dynamic and static combined loading SHPB experimental device is used to carry out dynamic impact experiment on the impact ...
Jianhang CHEN, Banquan ZENG, Junwen ZHANG   +2 more
doaj   +1 more source

Design of a split Hopkinson pressure bar with partial lateral confinement [PDF]

, 2016
This paper presents the design of a modified split Hopkinson pressure bar (SHPB) where partial lateral con- finement of the specimen is provided by the inertia of a fluid annulus contained in a long steel reservoir.
Andrew D Barr, Andrew Tyas, Barr A D, Clarke S D, Frew D J, Gray G TIII ed Medlin D, Hallquist J O, James A Warren, Lu H, Pierce S J, Sam D Clarke, Sam E Rigby, Tyas A   +12 more
core   +1 more source

Study on dynamic splitting and evolution mechanism of sandstone under freeze-thaw cycle

矿业科学学报
This study attempts to investigate the dynamic tensile mechanical properties of sandstone under freeze-thaw cycle by using the split Hopkinson pressure bar (SHPB)test system to perform dynamic splitting tests on sandstone samples with freeze-thaw cycle 0,
YANG Guoliang, SHANG Zhuo, ZOU Zehua, BI Jingjiu, DONG Zhiwen   +4 more
doaj   +1 more source

A framework for analyzing hyper-viscoelastic polymers

, 2017
Hyper-viscoelastic polymers have multiple areas of application including aerospace, biomedicine, and automotive. Their mechanical responses are therefore extremely important to understand, particularly because they exhibit strong rate and temperature ...
Siviour, Clive, Trivedi, Akash
core   +1 more source

Granite Strain Waveform Curve Analysis in SHPB Experiment [PDF]

Proceedings of the 2016 International Conference on Civil, Transportation and Environment, 2016
The damage degree of the rock and its strain has the nature relation, this paper choose the granite which is most common rock in the engineering practice as the research object. It carried on more categories of impact test research about granite specimen of length to diameter ratio is 0.8 times in using split hopkinson pressure bar (SHPB) device, and ...
Shufeng Liang, Shenglin Li, Dianshu Liu, Qingcheng Zhang   +3 more
openaire   +1 more source

Dynamic tensile strength and fracture evolution of characteristic shale with bedding and hole using linear regression theory

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, Ning Luo, Jianan Zhou, Haohao Zhang, Penglong Li, Yu Wang, Cheng Zhai, Tianran Ma   +7 more
wiley   +1 more source

Application-Oriented Digital Image Correlation for the High-Speed Deformation and Fracture Analysis of AISI 1045 and Ti6Al4V Materials

Applied Mechanics, 2022
In order to achieve realistic simulations of the chip formation, high quality input data regarding the flow stress and damage behavior of the materials are required.
Lars Gerdes, Sebastian Berger, Jannis Saelzer, Pascal Franck, Ramon Helwing, Andreas Zabel, Frank Walther   +6 more
doaj   +1 more source

Dynamic Characterization of Himalayan Quartzite using SHPB

Procedia Engineering, 2017
Abstract In the present work, dynamic stress-strain response of Himalayan quartzite is tested under high loading rates using split Hopkinson pressure bar (SHPB) device for the first time in the literature. The physical and static mechanical properties of quartzite e.g.
Sunita Mishra, Tanusree Chakraborty, Vasant Matsagar   +2 more
openaire   +1 more source

Instability mechanism and failure characteristics of underground cavern in block system under the action of seismic waves

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, Jinxiao Liu, Gaoshuo Zhang, Wenxin Li, Changdi He   +4 more
wiley   +1 more source