Riganti, Gianmario and Cadoni, Ezio (2014) Numerical simulation of the high strain-rate behaviour of quenched and self-tempered reinforcing steel in tension. Materials and Design, 57. pp. 156-167. ISSN 0261-3069
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This paper presents the numerical analysis of the high strain-rate behavior of quenched and self-tempered reinforcing steel in tension. The investigation has been performed properly simulating the experimental facility (SHTB-Split Hopkinson Tension Bar), highlighting criticism in the simulation and interpretation of the experimental results. Finite element simulation has allowed a robust model validation of the B450C reinforcing steel. Parametrical finite element model has been used to rebuild the input and output signals of the SHTB. Physical influence of damping in input wave and modelling strategies have been discussed. The elastic and damping dispersion fonts have been introduced into the model to explain the real case variability in SHTB signals. Strain-rate dependent plasticity model has been used by LsDyna code features. Time dependent plasticity has been developed to explain upper and lower yield values of the material resulting into a loading rate sensitivity. Finally, the material model has been used to reconstruct a virtual test over a rebar of 32mm diameter, as an example of general procedure to calculate the global material response.
| Item Type: | Scientific journal article, Newspaper article or Magazine article |
|---|---|
| Uncontrolled Keywords: | Reinforcing steel bar; Simulation; High strain-rate; Upper yield dynamic stress; Time dependent plasticity; Split Hopkinson Tension Bar |
| Subjects: | Engineering Engineering > Civil engineering Engineering > Civil engineering > Structural engineering |
| Department/unit: | Dipartimento ambiente costruzioni e design > Laboratorio SUPSI DYNAMAT |
| Depositing User: | Ezio Cadoni |
| Date Deposited: | 11 Feb 2014 10:51 |
| Last Modified: | 24 Aug 2023 14:00 |
| URI: | http://repository.supsi.ch/id/eprint/3637 |
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