Journal of Engineering Physics and Thermophysics
is a translation of Inzhenerno-fizicheskii Zhurnal,
a publication of the Academic Scientific Complex
"A. V. Luikov Heat and Mass Transfer Institute"
of the National Academy of Sciences of Belarus
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CERTAIN ASPECTS OF SHOCK-WAVE MOTION OF A
MEDIUM CAUSED BY PHASE TRANSITIONS AND FAILURE
A. M. Petrenko and G. S. Romanov
UDC 534.222.2:539.2
The article presents the results of a numerical solution
of the problem of explosion in silicate rock taking into account melting,
polymorphic phase transition, and various kinds of brittle failure.
We show that phase transition provides an effective increase in the
stability of a medium to explosive effect, while cracking processes
lead to the formation of a stable two-wave structure. A relationship
between the destruction parameters and the structure of shock-wave
elastic motion is established. We estimate the effect of phase transitions
and failure on the spectrum of acoustic emission initiated by explosion.
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