Abstract
In this work, a one-dimensional simplified model was developed to predict stress, strain, and strain-rate in high strain rates Hopkinson pressure bar experiments, namely, between 500-5000/s. To this goal, a one-dimensional model for Hokinson bar tests was developed based on analyses of wave propagation in bars and assuming the specimen is under equilibrium during the test. The numerical tool implemented using Matlab and validated regarding experimental data. This new model will be very helpful in designing the specimens for split Hopkinson bar tests and also in the interpretation of the experimental raw data.
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