Impact Force Prediction for a Hopkinson Bar Using Axisymmetric Solid Elements
One of the most widely used experimental configurations for high strain-rate material measurements is the split Hopkinson pressure bar. The concept of the Hopkinson bar involves the determination of dynamic stresses, strains, or displacements occurring at the end of a bar. It uses the longitudinal impact of a cylindrical projectile to generate an incident pulse. That pulse allows the specimen, sandwiched between two Hopkinson bars, to be loaded dynamically. In order to study the influence of the strain rate on the mechanical properties of the specimen, it is useful to be able to change the profile of the incident wave. To that end, different cylindrical and conical projectiles can be used.
KeywordsContact Force Impact Velocity Impact Force Force History Triangular Cross Section
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