https://doi.org/10.1051/epjconf/201818302035
Dynamic properties of stainless steel under direct tension loading using a simple gas gun
1
Research Institute of Mechanics, National Research Lobachevsky State University of Nizhny Novgorod,
603022,
Russia
2
Military University of Technology, Civil Engineering and Geodesy Faculty,
00-908
Warsaw,
Poland
* Corresponding author: bragov@mech.unn.ru
Published online: 7 September 2018
The combined experimental and theoretical approach was applied to the study of high-speed deformation and fracture of the 1810 stainless steel. The material tests were performed using a split Hopkinson pressure bar to determine dynamic stress-strain curves, strain rate histories, plastic properties and fracture in the strain rate range of 102 ÷ 104 s-1. A scheme has been realized for obtaining a direct tensile load in the SHPB, using a tubular striker and a gas gun of a simple design. The parameters of the Johnson-Cook material model were identified using the experimental results obtained. Using a series of verification experiments under various types of stress-strain state, the degree of reliability of the identified mathematical model of the behavior of the material studied was determined.
© The Authors, published by EDP Sciences, 2018
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