Tensile and compressive behaviour of S355 mild steel in a wide range of strain rates
DynaMat Lab, University of Applied Sciences of Southern 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: email@example.com
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
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