Technique for Combined Dynamic Compression-Shear Testing of PBXs

被引：28

作者：

Zhao, P. D. ^{[1
]}

Lu, F. Y. ^{[1
]}

Lin, Y. L. ^{[1
]}

Chen, R. ^{[1
]}

Li, J. L. ^{[1
]}

Lu, L. ^{[2
]}

机构：

[1] Natl Univ Def Technol, Coll Sci, Changsha 410073, Hunan, Peoples R China

[2] Natl Univ Def Technol, Coll Elect Sci & Engn, Changsha 410073, Hunan, Peoples R China

来源：

EXPERIMENTAL MECHANICS | 2012年 / 52卷 / 02期

关键词：

Polymer bonded explosives; SHPB; Compression-shear; High strain rate; Quartz; PULSE SHAPING TECHNIQUES; HOPKINSON PRESSURE BAR; BOROSILICATE GLASS; FAILURE; EXPLOSIVES; FRICTION;

D O I：

10.1007/s11340-011-9534-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We modify the split Hopkinson pressure bar and propose a compression-shear experimental method to investigate the dynamic behavior of polymer-bonded explosives (PBXs). The main apparatuses used include an incident bar with a wedge-shaped end and two transmission bars. We employ Y-cut quartzes with a rotation angle of 17.7 degrees to measure the shear force and an optical system for shear strain measurement. A PBX with a density of 1.7 g/cm(3) is investigated using the proposed method. Experimental results show that the specimen endures both compression and shear failure. Compression failure stress rises, and shear failure stress decreases as the strain rate increases. The sequences of shear and compression failure times are various at different strain rates. Based on the maximum shear failure criterion, we conclude that these phenomena are related to the experimental loading path.

引用

页码：205 / 213

页数：9

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