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Title: Benchmarking impact hydrocodes in the strength regime: Implications for modeling deflection by a kinetic impactor

Abstract

The Double Asteroid Redirection Test (DART) is a NASA-sponsored mission that will be the first direct test of the kinetic impactor technique for planetary defense. Here, the DART spacecraft will impact into Didymos-B, the moon of the binary system 65803 Didymos and the resulting period change will be measured from Earth. Impact simulations will be used to predict the crater size and momentum enhancement expected from the DART impact. Because the specific material properties (strength, porosity, internal structure) of the Didymos-B target are unknown, a wide variety of numerical simulations must be performed to better understand possible impact outcomes. This simulation campaign will involve a large parameter space being simulated using multiple different shock physics hydrocodes. In order to understand better the behaviors and properties of numerical simulation codes applicable to the DART impact, a benchmarking and validation program using different numerical codes to solve a set of standard problems was designed and implemented.

Authors:
 [1];  [2];  [1];  [3];  [3];  [4];  [5]; ORCiD logo [4];  [6];  [7];  [2];  [2];  [1];  [1];  [1];  [6]
  1. Johns Hopkins Univ., Laurel, MD (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Imperial College London, London (United Kingdom)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  5. Leibniz Inst. for Evolution and Biodiversity Science, Berlin (Germany)
  6. Leibniz Inst. for Evolution and Biodiversity Science, Berlin (Germany); Freie Univ. Berlin, Berlin (Germany)
  7. Univ. Cote d'Azur, Nice (France)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1572328
Report Number(s):
LA-UR-19-22134
Journal ID: ISSN 0019-1035
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Accepted Manuscript
Journal Name:
Icarus
Additional Journal Information:
Journal Name: Icarus; Journal ID: ISSN 0019-1035
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
Asteroids; Cratering; Impact processes

Citation Formats

Stickle, Angela M., Syal, Megan Bruck, Cheng, Andy F., Collins, Gareth S., Davison, Thomas M., Gisler, Galen Ross, Güldemeister, Nicole, Heberling, Tamra, Luther, Robert, Michel, Patrick, Miller, Paul, Owen, J. Michael, Rainey, Emma S. G., Rivkin, Andrew S., Rosch, Thomas, and Wünnemann, Kai. Benchmarking impact hydrocodes in the strength regime: Implications for modeling deflection by a kinetic impactor. United States: N. p., 2019. Web. doi:10.1016/j.icarus.2019.113446.
Stickle, Angela M., Syal, Megan Bruck, Cheng, Andy F., Collins, Gareth S., Davison, Thomas M., Gisler, Galen Ross, Güldemeister, Nicole, Heberling, Tamra, Luther, Robert, Michel, Patrick, Miller, Paul, Owen, J. Michael, Rainey, Emma S. G., Rivkin, Andrew S., Rosch, Thomas, & Wünnemann, Kai. Benchmarking impact hydrocodes in the strength regime: Implications for modeling deflection by a kinetic impactor. United States. doi:10.1016/j.icarus.2019.113446.
Stickle, Angela M., Syal, Megan Bruck, Cheng, Andy F., Collins, Gareth S., Davison, Thomas M., Gisler, Galen Ross, Güldemeister, Nicole, Heberling, Tamra, Luther, Robert, Michel, Patrick, Miller, Paul, Owen, J. Michael, Rainey, Emma S. G., Rivkin, Andrew S., Rosch, Thomas, and Wünnemann, Kai. Mon . "Benchmarking impact hydrocodes in the strength regime: Implications for modeling deflection by a kinetic impactor". United States. doi:10.1016/j.icarus.2019.113446.
@article{osti_1572328,
title = {Benchmarking impact hydrocodes in the strength regime: Implications for modeling deflection by a kinetic impactor},
author = {Stickle, Angela M. and Syal, Megan Bruck and Cheng, Andy F. and Collins, Gareth S. and Davison, Thomas M. and Gisler, Galen Ross and Güldemeister, Nicole and Heberling, Tamra and Luther, Robert and Michel, Patrick and Miller, Paul and Owen, J. Michael and Rainey, Emma S. G. and Rivkin, Andrew S. and Rosch, Thomas and Wünnemann, Kai},
abstractNote = {The Double Asteroid Redirection Test (DART) is a NASA-sponsored mission that will be the first direct test of the kinetic impactor technique for planetary defense. Here, the DART spacecraft will impact into Didymos-B, the moon of the binary system 65803 Didymos and the resulting period change will be measured from Earth. Impact simulations will be used to predict the crater size and momentum enhancement expected from the DART impact. Because the specific material properties (strength, porosity, internal structure) of the Didymos-B target are unknown, a wide variety of numerical simulations must be performed to better understand possible impact outcomes. This simulation campaign will involve a large parameter space being simulated using multiple different shock physics hydrocodes. In order to understand better the behaviors and properties of numerical simulation codes applicable to the DART impact, a benchmarking and validation program using different numerical codes to solve a set of standard problems was designed and implemented.},
doi = {10.1016/j.icarus.2019.113446},
journal = {Icarus},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {10}
}

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This content will become publicly available on October 21, 2020
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