Investigation of localized plastic shear under dynamic loading in a split Hopkinson pressure bar

Authors

  • Михаил Альбертович Соковиков (Mikhail A. Sokovikov) Institute of Continuous Media Mechanics UB RAS

DOI:

https://doi.org/10.17072/1994-3598-2019-2-41-45

Keywords:

plastic strain localization, infrared thermography, dynamic loading

Abstract

The mechanisms of plastic shear localization under dynamic loading were investigated experimentally. The dynamic load tests of the specimens were performed in the split Hopkinson pressure bar. To study the localized shear under high-rate loading, we used two types of specimens of special shape, which were designed to conduct experimental studies of plastic strain localization under dynamic loading. The study was conducted on the specimens made of aluminum alloy AMg6. The surface of the specimens was investigated in real time mode using a CEDIP Silver 450M high-speed infrared camera. The obtained distribution of the temperature field at different times allowed us to judge the development of the process of plastic strain localization. The infrared studies, structural analysis, and numerical modeling of the experiments, taking into account the evolution of the defective subsystem of the material, lend support to the view that the mechanism of strain localization is not associated with thermal softening.

References

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Published

2019-08-13

How to Cite

Соковиков (Mikhail A. Sokovikov) М. А. (2019). Investigation of localized plastic shear under dynamic loading in a split Hopkinson pressure bar. Bulletin of Perm University. Physics, (2). https://doi.org/10.17072/1994-3598-2019-2-41-45

Issue

Section

Regular articles