Results 191 to 200 of about 6,265 (226)
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Numerical Simulation of SHPB Experiment and Analysis on Stress Wave
Applied Mechanics and Materials, 2011Concrete is a typical kind of rate sensitive material. In this paper, the concrete specimens were tested in the SHPB experiment system. Based on H-J-C constitutive model, the SHPB experiment was simulated by LS-DANY. The stress-strain curves which were gat from numerical simulation in the LS-DANY were compared with the stress-strain curves which were ...
Ru Heng Wang +3 more
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HISTORICAL REVIEW OF RESEARCH AND DEVELOPMENT OF THE SHPB METHOD IN JAPAN
International Journal of Modern Physics B, 2008Historical review of research and development of the SHPB method in Japan is outlined. After introduction of the SHPB in early 1960s, various kinds of compression, tension, torsion and bending tests have been performed in Japan and are presently shown together with special techniques such as the strain rate change test and the ramped wave method ...
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Investigating Uncertainty in SHPB Modeling and Characterization of Soft Materials
The increasing use of soft materials in industrial, commercial and military applications has necessitated a more thorough understanding of their visco-hyperelastic, reactive, and other non-linear properties. Additionally, testing and design methods for components that employ these materials have required innovation.Christopher Czech +3 more
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Wave shaping by special shaped striker in SHPB tests
2011The split Hopkinson pressure bar has been a very popular and promising experimental technique for the study of dynamic behaviours of metallic materials for its easy operation and relatively accurate results, with three basic assumptions (Davies and Hunter, 1963; Bazle, Sergey and John, 2004): (a) waves propagating in the bars can be described by the ...
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Experimental study for friction effect investigation on SHPB
2001The paper presents an investigation on SHPB behaviour used for material characterisation in compression testing at high strain rate. Material flow stress determined with the SHPB test is affected by radial and axial inertia as well as friction. The particular topics treated are the effects of friction between specimen and bars interfaces on the flow ...
BERTI, GUIDO +2 more
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Numerical Simulations of the Influence of Loading Pulse Shape on SHPB Measurements
AIP Conference Proceedings, 2002Direct numerical simulation of a Split Hopkinson Pressure Bar (SHPB) system is utilized to assess the effect of varying the loading pulse on the stress‐strain response of a material. Calculated incident, reflected, and transmitted pulses are correlated with the stress‐strain response of a generic sample using a number of classic methods (1‐ and 2‐wave ...
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A New Technique of Dynamic Spherical Indentation Based on SHPB
A new technique for testing dynamic spherical indentation of materials was proposed. It is implement by putting a WC alloy ball between two specimens. One of the specimens was bonded with input bar and the other was bonded with the output bar. Two specimens then was pressed in the process of indentation.Song Li, Liang Haozhe
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Strain-rate effect of polymers and correction methodology in a SHPB test
International Journal of Impact Engineering, 2022Qingming Li
exaly
Optimal Pulse Shapes for SHPB Tests on Soft Materials
For split Hopkinson pressure bar (SHPB) tests on soft materials, the goals of homogeneous deformation and uniform uniaxial stress in the specimen present experimental challenges, particularly at higher strain rates. It has been known for some time that attainment of these conditions is facilitated by reducing the thickness of the specimen or by ...Mike Scheidler +2 more
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Multi-scale modeling of the concrete SHPB test based on DEM-FDM coupling method
Construction and Building Materials, 2022Guangcheng Long
exaly