Abstract
The present work summarizes the results of Shaped Charge jet impact against plain and ultra high performance concretes. Three charge configurations were investigated using different wave shaping methods for focussing the detonation wave. The wave shaping enhancements resulted in a significant improvement of the jet penetration performance. The three focussing methods were tested against both types of concrete. The Pressure-Shear Damage model available in the CTH hydrocode was used to simulate the material damage. Hydrostatic compression strength and compressive, tensile, and shear strength data available in the literature were used to populate the model. Comparison with the experimental results demonstrated that it is possible to describe the depth of penetration with this model. However, an adequate description of the rear spallation damage requires a more advanced modelling approach.
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Acknowledgements
The authors are grateful to G. Katselis, DSTO, for participation in the initial stage of the work, to T. Delaney for assistance in conducting the experiments, and to the DSTO Scientific Engineering Services staff for manufacturing of the wave shaper and charge components and their assistance in developing the large diameter Split Hopkinson Pressure Bar facility. The authors would also like to thank Dr. Carlo Albertini of Dynalab, Italy, for his help in the SHPB design.
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Resnyansky, A.D., Weckert, S.A. (2015). Damage of Two Concrete Materials due to Enhanced Shaped Charges. In: Song, B., Casem, D., Kimberley, J. (eds) Dynamic Behavior of Materials, Volume 1. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-06995-1_39
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DOI: https://doi.org/10.1007/978-3-319-06995-1_39
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