| Abstract: | The process of reflection of shock waves (SW) from a solid wall in a two-component mixture of condensed materials is studied
within the framework of mechanics of heterogeneous media. The velocity of a reflected SW and the values of the parameters
behind its front are analytically determined as functions of the velocity of the incident wave and the initial parameters
of the mixture. It is shown that the absolute value of the velocity of the reflected SW can be greater than the velocity of
the incident SW in mixtures with a small content of the light component and at low velocities of the incident shock wave.
The nonmonotonic character of the dependence of pressure in the final equilibrium state behind the incident SW on the initial
volume concentration of particles is demonstrated. The velocity of the incident SW is estimated for the case where a similar
effect is also observed behind a reflected SW. It is established that, for weak shock waves, the dependence of the amplification
factor of the reflected SW on the initial volume concentration of the light component is nonmonotonic and has a local maximum.
It is noted that, as the velocity of the incident SW increases, the effect of compacting of the mixture (increase in concentration
of the heavy component) behind the reflected SW becomes much less pronounced than in a passing SW.
Institute of Theoretical and Applied Mechanics, Siberian Division, Russian Academy of Sciences. Novosibirsk 630090. Translated
from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 40, No. 5, pp. 73–78, September–October, 1999. |
