Analysis of Impact Melt and Vapor Production in CTH for Planetary Applications

This paper explores impact melt and vapor generation for a variety of impact speeds and materials using the shock physics code CTH. The study first compares the results of two common methods of impact melt and vapor generation to demonstrate that both the peak pressure method and final temperature m...

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Bibliographic Details
Published in:Procedia engineering 2015-01, Vol.103 (C), p.499-506
Main Authors: Quintana, S.N., Crawford, D.A., Schultz, P.H.
Format: Article
Language:English
Subjects:
ASTRONOMY AND ASTROPHYSICS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CTH
hydrocode
impact melt
impact vaporization
mpact melt
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Summary:This paper explores impact melt and vapor generation for a variety of impact speeds and materials using the shock physics code CTH. The study first compares the results of two common methods of impact melt and vapor generation to demonstrate that both the peak pressure method and final temperature method are appropriate for high-speed impact models (speeds greater than 10km/s). However, for low-speed impact models (speeds less than 10km/s), only the final temperature method is consistent with laboratory analyses to yield melting and vaporization. Finally, a constitutive model for material strength is important for low-speed impacts because strength can cause an increase in melting and vaporization.
ISSN:1877-7058
1877-7058
DOI:10.1016/j.proeng.2015.04.065