Development of Techniques for Investigating Energy Contributions to Target Deformation and Penetration During Reactive Projectile Hypervelocity Impact

摘要

There are longstanding interests in the effects during hypervelocity penetration of projectiles and shaped charge jets through water and through submerged targets. The effects of apparent reaction during the penetration of reactive aluminum jets through an inert fluid and water are examined in this research, where there is an attempt to differentiate the causes of observed target deformation and volume displacement, using specially developed routines in the ANSYS AUTODYN and WORKBENCH EXPLICIT DYNAMICS finite difference code. This reports covers shaped charge, penetration and metal combustion theory which is crucial for the determined process. The jet criteria is examined using ANSYS AUTO- DYN, determining the jet characteristics occurring which are likely to have strong influences on the penetration process. Furthermore, the penetration process is simulated by a special developed technique using this software. Experimental and simulation results are compared and possible reasons for observed differences are demonstrated and evaluated. Finally, an explanation for the effects observed in the experiments, which is supported by all available information, is provided.