Bauschinger effect in uranium. [Rarefaction waves]

The Bauschinger effect (different elastic-plastic behavior upon unloading) was measured in uranium and a model of the effect developed for use in one-dimensional hydrodynamic codes. Results from plate-impact tests show that rarefaction waves in uranium can be calculated more accurately with this model. We conclude that the Bauschinger effect can be an important aspect of rarefaction waves in uranium and other materials. 8 figures. (auth)