We study the free vibrations of a spherical shell filled with an elastic medium.The equa- tions of motion of a thin elastic spherical shell of exposure to internal pressure are given.Me- dium, filling the shell with a significantly has the lower Duffle Bag modulus of elasticity.
Solution for the free vibration of the system shell filler is presented.We construct an ana- lytical solution of the problem, dependence of the oscillation frequency of the shell without the filler as a function of the frequency of the shell - filler.A 533 plot of the frequency spectra for the two branches is given.