An Application of Longitudinal Elastic Waves for Investigation of Materials Under High Strain Rates Using the Hopkinson Bar
2014
scientific article
english
- Hopkinson bar
- elastic wave propagation
- d’Alembert solution
- numerical simulation
EN In the paper there is presented a discrete-continuous model of the Split Hopkinson Pressure Bar (SHPB) for numerical simulations of a dynamic behaviour of material specimens under high strain-rates. For this purpose several material theories describing visco-elasto-plastic properties of the tested specimens can be applied. Using this model impact-type dynamic responses are sought by means of the longitudinal elastic wave analytical solution of the d’Alembert type. The proposed model enables us theoretical strength investigations for various elasto-plastic materials under great deformation velocities as well as structural parameter determination of the real SHPB designed to play a role of the laboratory test-rig.
305 - 310
CC BY (attribution alone)
public
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