Physics – Geophysics
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pggp.rept..350r&link_type=abstract
In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1990 p 350-351 (SEE N92-10728 01-91)
Physics
Geophysics
Asteroids, Collisions, Computer Programs, Hydrodynamics, Size Distribution, Targets, Computerized Simulation, Fragments, Impact Loads, Mathematical Models, Projectiles, Strain Rate
Scientific paper
Traditionally, laboratory impact experiments, designed to simulate asteroid collisions, attempted to establish a predictive capability for collisional outcomes given a particular set of initial conditions. Unfortunately, laboratory experiments are restricted to using targets considerably smaller than the modelled objects. It is therefore necessary to develop some methodology for extrapolating the extensive experimental results to the size regime of interest. Results are reported obtained through the use of two dimensional hydrocode based on 2-D SALE and modified to include strength effects and the fragmentation equations. The hydrocode was tested by comparing its predictions for post-impact fragment size distributions to those observed in laboratory impact experiments.
Asphaug Erik
Melosh Henry Jay
Ryan Eileen V.
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