Abstract

The gouging impact phenomenon which occurs at the Holloman Air Force Base High Speed Test Track (HHSTT) during hypervelocity impact testing is examined further. The material constitutive models for VascoMax 300 and 1080 steel are refined by performing flyer plate impact experiments. These experiments are evaluated through the hydrocode, CTH, to improve the material strength models at high strain-rates. The improved viscoplastic models are then validated by comparing laboratory hypervelocity impact tests to CTH simulations. The final material models are then used in sled/rail impact simulations for the HHSTT gouging problem. These full sled simulations match previous experimental findings extremely well.

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