https://doi.org/10.1140/epjst/e2018-00113-4
Regular Article
Tensile and compressive behaviour of S355 mild steel in a wide range of strain rates
1
DynaMat Lab, University of Applied Sciences of Southern Switzerland,
Canobbio, Switzerland
2
Department of Mechanics and Applied Computer Science, Faculty of Mechanical Engineering, Military University of Technology,
00-908
Warsaw, Poland
3
Faculty of Civil Engineering and Geodesy, Military University of Technology,
00-908
Warsaw, Poland
a e-mail: leopold.kruszka@wat.edu.pl
Received:
6
November
2017
Received in final form:
30
January
2018
Published online: 10
September
2018
This paper presents a comparison between mechanical compressive and tensile properties of S355 structural (mild) steel in a wide range of strain rates. A split Hopkinson pressure bar apparatus is used to investigate the dynamic compressive behaviour at high strain rates (740–5880 s−1). A hydro-pneumatic machine (5–25 s−1) and a modified split Hopkinson tensile bar apparatus (300–850 s−1) are used to study the strain rate sensitivity under dynamic tension. Quasi-static tensile and compressive tests are conducted on a universal electromechanical testing machine. The model parameters of two commonly used constitutive equations (Johnson–Cook and Cowper–Symonds) are also compared, separately for each model during compression and tension deformations.
© The Author(s) 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
