Computer Science – Sound
Scientific paper
Jul 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aps..shk..s201a&link_type=abstract
American Physical Society, Shock Compression Meeting, July 27 - August 1, 1997, abstract #S2.01
Computer Science
Sound
Scientific paper
The large majority of asteroidal objects in the solar system, and thus the majority of objects impacting planetary surfaces, are stoney rather than iron. Of the stony meteorites, the most common types are ordinar and carbonaceous chondrites. Although such objects represent a large portion of the impactors, the behaviors of these materials under shock compression have not previously been experimentally determined. As a consequence, theoretical models of impact phenomena suffer from a fundamental uncertainty as to the suitability of equations of state that are currently in use. We present experimentally determined equations of state for Murchison carbonaceous chondrite and Bruderheim enstatite chondrite. These equations of state are compared to models based on the compositions. The composition-based models are shown to be valid for the most part, but do not always give the correct behavior especially at lower shock pressures. The availability of equations of state for these common impactor materials now allows the theoretical models of impacts to be placed on a sounder quantitative basis.
Ahrens Thomas J.
Anderson William W.
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