Investigating the confining compressibility of STF at high deformation rate

Investigating the confining compressibility of STF at high deformation rate

The split Hopkinson pressure bar (SHPB) was used to study the compressibility of shear thickening fluid (STF) at high deformation rate. In this study, a steel bulk was introduced into the SHPB system to confine and load the STF. A series of STFs with different particle types (SiO2 and PSt-EA) and vo...

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Veröffentlicht in:European physical journal. Applied physics 2012-12, Vol.60 (3), p.31101
Hauptverfasser: Jiang, Weifeng, Gong, Xinglong, Xu, Yulei, Xuan, Shouhu, Jiang, Wanquan, Zhu, Wei, Li, Xiaofeng, Qin, Lijun
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container_issue 3
container_start_page 31101
container_title European physical journal. Applied physics
container_volume 60
creator Jiang, Weifeng
Gong, Xinglong
Xu, Yulei
Xuan, Shouhu
Jiang, Wanquan
Zhu, Wei
Li, Xiaofeng
Qin, Lijun
description The split Hopkinson pressure bar (SHPB) was used to study the compressibility of shear thickening fluid (STF) at high deformation rate. In this study, a steel bulk was introduced into the SHPB system to confine and load the STF. A series of STFs with different particle types (SiO2 and PSt-EA) and volume fractions (63 vol.% and 65 vol.%) were tested and the results were compared. The reliability of the results was proved by repeating the tests and the force balance in suspension. The bulk modulus was used to evaluate the compressibility of STF, which indicated that the SiO2-based STF exhibited a larger compressibility than the PSt-EA-based STF. It was found that the bulk modulus increases with increasing of the strain rate and the volume fraction shows little effect on the bulk modulus. The structure-dependent mechanical property was analyzed and the loading effect of bulk modulus was considered to be originated from the interparticle clustering.
doi_str_mv 10.1051/epjap/2012120128
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