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Title: Analysis of impact melt and vapor production in CTH for planetary applications

Journal Article · · Procedia Engineering
 [1];  [2];  [1]
  1. Brown Univ., Providence, RI (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

This study 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 10 km/s). However, for low-speed impact models (speeds less than 10 km/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.

Research Organization:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1214690
Journal Information:
Procedia Engineering, Vol. 103, Issue C; ISSN 1877-7058
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

References (18)

CTH: A three-dimensional shock wave physics code journal January 1990
Shocked plagioclase signatures in Thermal Emission Spectrometer data of Mars journal January 2006
Volatile-Rich Lunar Soil: Evidence of Possible Cometary Impact journal January 1973
Constraints on the role of impact heating and melting in asteroids journal May 1997
Post-impact thermal evolution of porous planetesimals journal October 2012
Impact-induced frictional melting in ordinary chondrites: A mechanism for deformation, darkening, and vein formation journal October 2003
A Reevaluation of Impact Melt Production journal June 1997
Effect of impact angle on vaporization journal September 1996
The role of ricochet impacts on impact vaporization journal December 2006
The Deep Impact oblique impact cratering experiment journal January 2007
Hydrocode simulation of the Chicxulub impact event and the production of climatically active gases journal November 1998
Scaling of melt production in hypervelocity impacts from high-resolution numerical simulations journal January 2011
Localized shock- and friction-induced melting in response to hypervelocity impact journal January 1998
Dynamic fault weakening and the formation of large impact craters journal October 2009
Velocity scaling impact melt volume journal January 1987
Modeling damage and deformation in impact simulations journal February 2004
Numerical modelling of impact melt production in porous rocks journal May 2008
Shock melting and vaporization of lunar rocks and minerals journal April 1972

Cited By (4)

Experimental research on discharge characteristics induced by hypervelocity impact on split targets with potential gradient journal July 2019
Slow Impacts on Strong Targets Bring on the Heat journal March 2018
Effects of Friction and Plastic Deformation in Shock‐Comminuted Damaged Rocks on Impact Heating journal January 2018
Examining the Potential Contribution of the Hokusai Impact to Water Ice on Mercury journal October 2018

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