Results 1 to 10 of about 3,979 (211)

Stress Uniformity Analyses on Nonparallel End-Surface Rock Specimen during Loading Process in SHPB Tests

Advances in Civil Engineering, 2018
To investigate the influence of nonparallel end-surface on stress uniformity during loading process in rock SHPB test, SHPB numerical simulations have been carried out by LS-DYNA when end-face nonparallelism is within 0.40% and Young’s modulus ranges ...
Pu Yuan, Qin-yong Ma, Dong-dong Ma
doaj   +2 more sources

Crack Detection and Evolution Law for Rock Mass under SHPB Impact Tests

Shock and Vibration, 2019
In order to accurately identify and quantitatively calculate the surface cracks of rock mass under SHPB impact loading, an automatic crack detection algorithm was proposed and evaluated by the experiment.
Xie Beijing, Dihao Ai, Yu Yang
doaj   +2 more sources

INVERSE COMPUTATIONAL DETERMINATION OF JOHNSON-COOK PARAMETERS USING THE SHPB TEST APPARATUS

Acta Polytechnica CTU Proceedings, 2019
The paper describes determination of the material parameters of the Johnson-Cook constitutive model of steel S235 JR sample material by applying the inverse computational methodology using the digital twin model of the SHPB.
Anja Mauko, Branko Nečemer, Zoran Ren
doaj   +3 more sources

Elongational Viscosity Measurements Using a Semi-Hyperbolic Die

Applied Rheology, 2006
The lubricated semi-hyperbolic die has been proposed as a technique for generating uni-axial extensional flow and, hence, as a device for measuring elongational viscosity. Two methods for extracting extensional viscosity data for polymer melts in laminar
Baird D. G., Huang J.
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SHPB Test of High-Strength Concrete [PDF]

Proceedings of the 3rd International Conference on Material Engineering and Application (ICMEA 2016), 2016
Wei-Ling CHEN, Lan PANG, Chen LIU
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Development of the split-Hopkinson pressure bar and its application in testing the dynamic mechanical properties of quasi-brittle materials: A review

Journal of Materials Research and Technology
The Split-Hopkinson Pressure Bar (SHPB) apparatus is extensively used in rock mechanics to conduct dynamic research, with continuous advancements in the SHPB testing system leading to significant progress in understanding the dynamic properties of ...
Shizhuo Zou, Yongtao Gao, Zhiran Yang, Chao Yang, Lingyun Qian, Yu Zhou   +5 more
doaj   +1 more source

Dynamic tensile deformation and fracture of a highly particle-filled composite using SHPB and high-speed DIC method

EPJ Web of Conferences, 2012
In this work, various tensile tests, including Brazilian disc test (BDT), flattened Brazilian disc (FBD) test and semi-circular bending (SCB) test, were carried out on a highly particle-filled composite by using a split Hopkinson pressure bar (SHPB ...
Huang F., Guo B., Chen P., Zhou Z.
doaj   +1 more source

A Machine Learning-based Approach for Classifying Waveform Distortion Due to Misalignment in SHPB Experiments [PDF]

한국정밀공학회지
The Split Hopkinson Pressure Bar (SHPB) experiment is commonly employed to assess the dynamic mechanical properties of materials under high strain-rate conditions (10²-10⁴ s-¹) through the propagation of elastic stress waves via pressure bars.
Hyo Sung Hwang, Jeong Kim
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Experimental study on granite and the determination of its true strain-rate effect

Latin American Journal of Solids and Structures
To accurately determine the true strain-rate effect of granite in split Hopkinson pressure bar (SHPB) tests, systematic experimental studies from quasi-static to dynamic loading on the same batch of granite samples is required.
Yong Cai, Shuisheng Yu, Yubin Lu
doaj   +1 more source

Numerično modeliranje in validacija shpb preizkuševališča

, 2017
V okviru magistrskega dela je bil zgrajen numerični model SHPB preizkuševališča v programskem paketu LS-Dyna. Na podlagi eksperimentalno zajetih in obdelanih signalov izvedenih mehanskih preizkusov je bila izvedena validacija numeričnega modela. Za določanje dinamičnih mehanskih materialnih lastnosti je bil uporabljen inverzni postopek.
openaire   +1 more source