Modeling impact outcomes for the Double Asteroid Redirection Test (DART) mission
Angela Stickle,Emma S.G. Rainey,M. Bruck Syal,J.M. Owen,Paul L. Miller,Olivier S. Barnouin,Carolyn M. Ernst +6 more
TLDR
In this article, the authors present results from simulations using the shock physics codes CTH and Spheral of a DART-like impact into an asteroid target, which can be used to estimate the momentum enhancement of the moon from the impact.About:
This article is published in Procedia Engineering.The article was published on 2017-01-01 and is currently open access. It has received 37 citations till now. The article focuses on the topics: Impact crater.read more
Citations
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Journal ArticleDOI
AIDA DART asteroid deflection test: Planetary defense and science objectives
A. F. Cheng,Andrew S. Rivkin,Patrick Michel,Justin A. Atchison,Olivier S. Barnouin,Lance A. M. Benner,Nancy L. Chabot,Carolyn M. Ernst,Eugene G. Fahnestock,Michael Kueppers,Petr Pravec,Emma S.G. Rainey,Derek C. Richardson,Angela Stickle,Cristina A. Thomas +14 more
TL;DR: The Asteroid Impact & Deflection Assessment (AIDA) mission is an international cooperation between NASA and ESA as discussed by the authors, which aims to demonstrate the kinetic impact technique on a potentially hazardous near-Earth asteroid and to measure and characterize the deflection caused by the impact.
Journal ArticleDOI
The Double Asteroid Redirection Test (DART): Planetary Defense Investigations and Requirements
Andrew S. Rivkin,Nancy L. Chabot,Angela Stickle,Cristina A. Thomas,Derek C. Richardson,Olivier S. Barnouin,E. Fahnestock,Carolyn M. Ernst,Andrew F. Cheng,Steven R. Chesley,Shantanu P. Naidu,T. S. Statler,Brent W. Barbee,H. F. Agrusa,Nicholas Moskovitz,R. Terik Daly,Petr Pravec,P. Scheirich,Elisabetta Dotto,Vincenzo Della Corte,Patrick Michel,Michael Küppers,Justin A. Atchison,Masatoshi Hirabayashi +23 more
Journal ArticleDOI
Assessing possible mutual orbit period change by shape deformation of Didymos after a kinetic impact in the NASA-led Double Asteroid Redirection Test
Masatoshi Hirabayashi,A. B. Davis,E. Fahnestock,Derek C. Richardson,Patrick Michel,Andrew F. Cheng,Andrew S. Rivkin,Daniel J. Scheeres,Steven R. Chesley,Yang Yu,Shantanu P. Naidu,Stephen R. Schwartz,Lance A. M. Benner,Petr Pravec,Angela Stickle,Martin Jutzi +15 more
TL;DR: In this article, a second-order inertia-integral mutual dynamics model was used to analyze the effects of the shapes of the primary and the secondary on the mutual orbit period change of the system.
Journal ArticleDOI
Global-scale Reshaping and Resurfacing of Asteroids by Small-scale Impacts, with Applications to the DART and Hera Missions
TL;DR: In this article , the authors used shock physics code calculations to model the entire cratering process resulting from impacts on small, weak asteroids that uses shock physics codes directly. And they found that small-scale impacts (with a projectile size less than 1/150 of the target size) can significantly deform weak asteroids, causing global resurfacing at the same time.
Proceedings ArticleDOI
Impact Modeling for the Double Asteroid Redirection Test Mission
Emma S.G. Rainey,Angela Stickle,Andrew F. Cheng,Andrew S. Rivkin,Nancy L. Chabot,Olivier S. Barnouin,Carolyn M. Ernst +6 more
TL;DR: In this paper, the authors present results from numerical simulations of the DART impact using the CTH shock physics code with 2D homogenous asteroid models, which greatly reduces the parameter space required for more expensive 3D simulations.
References
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Journal ArticleDOI
Fracture characteristics of three metals subjected to various strains, strain rates, temperatures and pressures
TL;DR: In this paper, a cumulative-damage fracture model is introduced which expresses the strain to fracture as a function of the strain rate, temperature and pressure, and the model is evaluated by comparing computed results with cylinder impact tests and biaxial (torsion-tension) tests.
Journal ArticleDOI
Catastrophic Disruptions Revisited
Willy Benz,Erik Asphaug +1 more
TL;DR: In this article, the authors used a smooth particle hydrodynamics method to simulate colliding rocky and icy bodies from centimeter scale to hundreds of kilometers in diameter in an effort to define self-consistently the threshold for catastrophic disruption.
Journal ArticleDOI
CTH: A three-dimensional shock wave physics code
TL;DR: CTH as mentioned in this paper is a software system under development at Sandia National Laboratories Albuquerque to model multidimensional, multi-material, large deformation, strong shock wave physics, and fracture.
Journal ArticleDOI
The scaling of impact processes in planetary sciences
TL;DR: A review of scaling laws for planetary impact processes can be found in this paper, where only the simplest concepts and first-order theories that are the most determined are presented, including the advantages and deficiencies of each.
Journal ArticleDOI
A strain-based porosity model for use in hydrocode simulations of impacts and implications for transient crater growth in porous targets
TL;DR: In this article, a new e-alpha model is proposed for dealing with porous compaction in numerical modeling of impact crater formation. But the model assumes that the compaction function depends upon volumetric strain rather than pressure.
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