A quartz-crystal-embedded split Hopkinson pressure bar for soft materials

被引:154
作者
Chen, W [1 ]
Lu, F [1 ]
Zhou, B [1 ]
机构
[1] Univ Arizona, Dept Aerosp & Mech Engn, Tucson, AZ 85721 USA
关键词
soft materials; Hopkinson bar; quartz crystal; dynamic behavior; high strain rate;
D O I
10.1007/BF02327540
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A dynamic experimental technique that is three orders of magnitude as sensitive in stress measurement as a conventional split Hopkinson pressure bar (SHPB) has been developed. Experimental results show that this new method is effective and reliable for determining the dynamic compressive stress-strain responses of materials with low mechanical impedance and low compressive strengths, such as elastomeric materials and foams at high strain rates. The technique is based on a conventional SHPB. Instead of a surface strain gage mounted on the transmission bar, a piezoelectric force transducer was embedded in the middle of the transmission bar of a high-strength aluminum alloy to directly measure the weakly transmitted force profile from a soft specimen. In addition, a pulse-shaper technique was used for increasing the rise time of the incident pulse to ensure stress equilibrium and homogeneous deformation in the low-impedance and low-strength specimen.
引用
收藏
页码:1 / 6
页数:6
相关论文
共 20 条
[1]   METHODOLOGICAL ASPECTS OF STUDYING DYNAMIC MATERIAL PROPERTIES USING THE KOLSKY METHOD [J].
BRAGOV, AM ;
LOMUNOV, AK .
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING, 1995, 16 (02) :321-330
[2]  
CHALUPNIK JD, 1966, EXP MECH, V6, P547
[3]   Dynamic response of Epon 828 T-403 under multiaxial loading at various temperatures [J].
Chen, W ;
Zhang, X .
JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME, 1997, 119 (03) :305-308
[4]   A split Hopkinson bar technique for low-impedance materials [J].
Chen, W ;
Zhang, B ;
Forrestal, MJ .
EXPERIMENTAL MECHANICS, 1999, 39 (02) :81-85
[5]   Dynamic compressive failure of a glass ceramic under lateral confinement [J].
Chen, WN ;
Ravichandran, G .
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1997, 45 (08) :1303-1328
[6]  
Folansbee P.S., 1985, ASM HDB AM SOC METAL, V8, P198
[7]   ASYMPTOTIC ANALYSIS OF WAVE-PROPAGATION IN A FINITE VISCOPLASTIC BAR [J].
GAMBY, D ;
CHAOUFI, J .
ACTA MECHANICA, 1991, 87 (3-4) :163-178
[8]  
*GE SIL, 1999, RTV630 HIGH STRENGTH
[10]   Influence of temperature and strain rate on the mechanical behavior of Adiprene L-100 [J].
Gray, GT ;
Blumenthal, WR ;
Trujillo, CP ;
Carpenter, RW .
JOURNAL DE PHYSIQUE IV, 1997, 7 (C3) :523-528