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Dynamic Experiments using Simultaneous Compression and Shear Loading

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Abstract

Material characterization at high strain rates under simultaneous compression and shear loading has been a challenge due to the differing normal and shear wave speeds. An experimental technique utilizing the compression Kolsky bar apparatus was developed to apply dynamic compression and shear loading on a specimen nearly simultaneously. Synchronization between the compression and shear loading was realized by generating the torsion wave near the specimen which minimizes the time difference between the arrival of the compression and torsion waves. This modified Kolsky bar makes it possible to characterize the dynamic response of a material to combined compression and shear impact loading. This method can also be applied to study dynamic friction behavior across an interface under controlled loading conditions. The feasibility of this method is demonstrated in the dynamic characterization of a simulant polymer bonded explosive material.

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Acknowledgements

This research was supported by a cooperative agreement between Air Force Research Laboratory and Purdue University (FA8651-13-2-0005). We also acknowledge for the inspiration from Dr. Dan Casem of Army Research Laboratory in the design and application of this experimental technique.

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Correspondence to B. Claus.

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Claus, B., Chu, J., Beason, M. et al. Dynamic Experiments using Simultaneous Compression and Shear Loading. Exp Mech 57, 1359–1369 (2017). https://doi.org/10.1007/s11340-017-0310-2

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  • DOI: https://doi.org/10.1007/s11340-017-0310-2

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