A Biaxial Split Hopkinson Bar for Simultaneous Torsion and Compression
作者:
Jack L. Lewis,
Werner Goldsmith,
期刊:
Review of Scientific Instruments
(AIP Available online 1973)
卷期:
Volume 44,
issue 7
页码: 811-813
ISSN:0034-6748
年代: 1973
DOI:10.1063/1.1686253
出版商: AIP
数据来源: AIP
摘要:
A biaxial split Hopkinson bar which operates in simultaneous compression and torsion is described. The device utilizes torsional stress waves generated by release of a stored torque and compressive waves generated by mechanical impact of a long rod onto a loading bar. The torque is released by capacitive discharge explosion of a thin foil in a holding adhesive joint. The two stress waves travel in opposite directions toward a specimen sandwiched between two rods, arriving at the specimen within 10 &mgr;sec of each other. The machine is used on specimens of compact bone, and it is found that plastic deformation without fracture can be achieved under the combined dynamic torsion and compression, whereas it seldom occurs under either of these loading modes alone.
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