Mathematics
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992acm..proc..561s&link_type=abstract
In Lunar and Planetary Inst., Asteroids, Comets, Meteors 1991 p 561-564 (SEE N93-19113 06-90)
Mathematics
1
Asteroids, Hydrodynamics, Impact, Mathematical Models, Planets, Conservation Equations, Impact Melts, Kinetic Energy, Vaporizing
Scientific paper
A three-dimensional smoothed particle hydrodynamics code was used to model normal and oblique impacts of silicate projectiles on asteroidal and planetary bodies. The energy of the system, initially in the kinetic energy of the impactor, is partitioned after impact into internal and kinetic energy of the impactor and the target body. These simulations show that, unlike the case of impacts onto a half-space, a significant amount of energy remains in the kinetic energy of the impacting body, as parts of it travel past the main planet and escape the system. This effect is greater for more oblique impacts, and for impacts onto the small planets. Melting and vaporization of both bodies were also examined. The amount of the target body melted was much greater in the case of smaller targets than for an impact of a similar scale on a larger body.
Ahrens Thomas J.
Smither Catherine L.
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