A Conical Striker Bar to Obtain Constant True Strain Rate for Kolsky Bar Experiments
| Autor: | M. J. Forrestal, T. L. Warren |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science genetic structures Strain (chemistry) Deformation (mechanics) Bar (music) Materials Science (miscellaneous) 02 engineering and technology Mechanics Conical surface Split-Hopkinson pressure bar 01 natural sciences Pulse shaping Condensed Matter::Materials Science 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials 0103 physical sciences Solid mechanics Constant (mathematics) |
| Zdroj: | Journal of Dynamic Behavior of Materials. 7:161-164 |
| ISSN: | 2199-7454 2199-7446 |
| DOI: | 10.1007/s40870-020-00269-1 |
| Popis: | Many split Hopkinson pressure bar (SHPB) or Kolsky bar techniques use pulse shaping methods to obtain constant engineering strain rate for the specimen response. However, constitutive models for numerical simulations use the axial rate of deformation which is the true axial strain rate. In this study, we present an equation for the incident bar strain produced by a truncated conical striker bar. These incident bar strains are shaped so that we can obtain constant true strain rate for the specimen. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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