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Proceedings Paper

Combined compression-shear loading at high strain rates: the split Hopkinson pressure shear bar
Author(s): Peng-duo Zhao; Fang-yun Lu; Yu-liang Lin; Rong Chen; Jun-ling Li; Gui-lin Sun
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Paper Abstract

The present paper proposes an experimental technique, the split Hopkinson pressure shear bar (SHPSB) which load materials with combined compression-shear. SHPSB is mainly composed of a projectile, an incident bar and two transmitter bars. The close-to-specimen end of incident is wedge-shaped with 90 degree. In each experiment, there were two identical specimens respectively agglutinated between one side of the wedge and one of transmitter bars. The sensors were three strain gages located on the bars and two piezoelectric crystals of LiNbO3 embedded at the end (near specimen) of transmitter bars. The numerical results validated the technique. A kind of explosive, JHL-3 was investigated by SHPSB. We find that JHL-3 is sensitive to strain rates and the shear strength is 0.75MPa at shear strainrate of 350s-1, and corresponding compression strength is 9MPa; the shear strength is about 1.8Mpa at shear strain-rate of 700s-1, and corresponding compression strength is about 25MPa.

Paper Details

Date Published: 25 August 2009
PDF: 6 pages
Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 737563 (25 August 2009); doi: 10.1117/12.839366
Show Author Affiliations
Peng-duo Zhao, National Univ. of Defense Technology (China)
Fang-yun Lu, National Univ. of Defense Technology (China)
Yu-liang Lin, National Univ. of Defense Technology (China)
Rong Chen, National Univ. of Defense Technology (China)
Jun-ling Li, National Univ. of Defense Technology (China)
Gui-lin Sun, Naval Aeronautical Engineering Institute (China)


Published in SPIE Proceedings Vol. 7375:
ICEM 2008: International Conference on Experimental Mechanics 2008
Xiaoyuan He; Huimin Xie; YiLan Kang, Editor(s)

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