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- W3128328470 abstract "• Generated material constants from test and literature data that capture the proper physics (pressure dependence, strain rate, strength of failed material, bulking) • Performed hypervelocity impacts and measured crater dimensions and momentum • enhancement. • Checked with material models provide the right physics • Performed computations that provide the right crater shape and momentum enhancement. Abstrac t Two NASA missions that will be launched in 2022 have spun renewed interest in hypervelocity impact of rocks and metals. This paper is focused in the prediction of the momentum enhancement effect, i.e. the extra momentum acquired by the target due to the ejecta flying off the target in the direction of the impactor. Predicting the momentum enhancement with simulations has been elusive, probably because the target material is rarely well characterized. This paper shows that, given a good knowledge of the properties of the target material and, by adding two essential pieces of the physics (strength of failed material and bulking after failure), the computer simulations can provide good predictions of the momentum enhancement for hypervelocity impact tests performed at Southwest Research Institute." @default.
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- W3128328470 date "2021-05-01" @default.
- W3128328470 modified "2023-10-14" @default.
- W3128328470 title "Momentum enhancement simulations for hypervelocity impacts on sandstone" @default.
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- W3128328470 doi "https://doi.org/10.1016/j.ijimpeng.2021.103832" @default.
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