Data processing method for bidirectional-load split Hopkinson compression bar

NIE Hailiang; SHI Xiaopeng; CHEN Chunyang; LI Yulong

doi:10.11883/bzycj-2017-0361

Volume 38 Issue 3

Feb. 2018

Turn off MathJax

Article Contents

Article Navigation > Explosion And Shock Waves > 2018 > 38(3): 517-524

NIE Hailiang, SHI Xiaopeng, CHEN Chunyang, LI Yulong. Data processing method for bidirectional-load split Hopkinson compression bar[J]. Explosion And Shock Waves, 2018, 38(3): 517-524. doi: 10.11883/bzycj-2017-0361

Citation:

NIE Hailiang, SHI Xiaopeng, CHEN Chunyang, LI Yulong. Data processing method for bidirectional-load split Hopkinson compression bar[J]. Explosion And Shock Waves, 2018, 38(3): 517-524. doi: 10.11883/bzycj-2017-0361

Citation:

PDF( 2886 KB)

Data processing method for bidirectional-load split Hopkinson compression bar

doi: 10.11883/bzycj-2017-0361

School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, China

Received Date: 2017-10-09
Rev Recd Date: 2017-12-18
Publish Date: 2018-05-25

Abstract

Abstract

This paper presents a bidirectional-load split Hopkinson compression bar (BSHCB), namely, adding other symmetrical incident wave on the basis of traditional split Hpkinson pressure bar (SHPB), the two incident waves would load the specimen synchronously and symmetrically. The data process equations are approached according to the one-dimensional stress wave theory. According to the numerical simulation analyses, it is concluded that the proposed data process equations can determine the engineering stress, engineering strain and engineering strain rate of the tested material in bidirectional-load split Hopkinson compression test. Moreover, compared with the traditional SHPB test, the specimens in bidirectional-load split Hopkinson compression test can reach constant stress state in shorter time, and the strain rate can be improved.
- bidirectional load,
- Hopkinson pressure bar,
- stress equilibrium,
- strain rate,
- data processing

FullText(HTML)

References(14)

References

[1]	HOPKINSON B. A method of measuring the pressure produced in the detonation of high explosives or by the impact of bullets[J]. Philosophical Transactions of the Royal Society of London, 1914, 213(612):437-456. DOI: 10.1098/rspa.1914.0008.
[2]	GARY G, MOHR D. Modified Kolsky formulas for an increased measurement duration of SHPB systems[J]. Experimental Mechanics, 2013, 53(4):713-717. DOI: 10.1007/s11340-012-9664-7.
[3]	NIE X, PRABHU R, CHEN WW, et al. A Kolsky torsion bar technique for characterization of dynamic shear response of soft materials[J]. Experimental Mechanics, 2011, 51(9):1527-1534. DOI: 10.1007/s11340-011-9481-4.
[4]	LIM J, CHEN W W, ZHENG J Q. Dynamic small strain measurements of Kevlar 129 single fibers with a miniaturized tension Kolsky bar[J]. Polymer Testing, 2010, 29(6):701-705. DOI: 10.1016/j.polymertesting.2010.05.012.
[5]	KOLSKY H. An investigation of the mechanical properties of materials at very high rates of loading[J]. Proceeding of the Physical Society, 1949, 62(11):676-700. DOI: 10.1088/0370-1301/62/11/302.
[6]	SONG B, GE Y, CHEN W W, et al. Radial inertia effects in Kolsky bar testing of extra-soft specimens[J]. Experimental Mechanics, 2007, 47(5):659-670. DOI: 10.1016/j.polymertesting.2010.05.012.
[7]	PARRY D J, DIXON P R, HODSON S, et al. Stress equilibrium effects within Hopkinson bar specimens[J]. Journal De Physique IV, 1994, 4(C8):107-112.DOI: 10.1051/jp4:1994816.
[8]	WANG L L, LABIBES K, AZARI Z, et al. Generalization of split Hopkinson bar technique to use viscoelastic bars[J]. International Journal of Impact Engineering, 1994, 15(5):669-686. DOI: 10.1016/0734-743X(94)90166-I.
[9]	HOU B, ONO A, ABDENNADHER S, et al. IMPact behavior of honeycombs under combined shear-compression. Part Ⅰ:Experiments[J]. International Journal of Solids and Structures, 2011, 48(5):687-697. DOI: 10.1016/j.ijsolstr.2010.11.005.
[10]	崔云霄, 卢芳云, 林玉亮, 等.一种新的高应变率复合压剪实验技术[J].实验力学, 2006, 21(5):584-590.DOI: 10.3969/j.issn.1001-4888.2006.05.007. CUI Yunxiao, LU Fangyun, LIN Yuliang, et al. A new combined compression-shear loading technique at high strain rates[J]. Journal of Experimental Mechanics, 2006, 21(5):584-590. DOI: 10.3969/j.issn.1001-4888.2006.05.007.
[11]	JOHNSON G R, COOK W H. Fracture characteristics of three metals subjected to various strains, strain rates, temperatures and pressures[J]. Engineering Fracture Mechanics, 1985, 21(1):31-48. DOI: 10.1016/0013-7944(85)90052-9.
[12]	李玉龙, 聂海亮, 汤忠斌, 等. 基于电磁力加载的分离式霍普金森压杆实验装置: CN201410161610. X[P]. 2014-07-09.
[13]	李玉龙, 聂海亮, 汤忠斌, 等. 一种基于电磁力的拉伸及压缩应力波发生器及实验方法: 201410171963. 8[P]. 2014-08-20.
[14]	李玉龙, 聂海亮, 汤忠斌, 等. 电磁式应力波发生器的主线圈及充电/放电的方法: 201510051071. 9[P]. 2015-06-03.