Abstract
In this paper, a generalized dynamical theory of thermoelasticity
is employed to study disturbances in an infinite elastic solid containing a
spherical cavity which is subjected to step rise in temperature in its inner
boundary and an impulsive dynamic pressure on its surface. The
problem is solved by the use of the Laplace transform on time. The
short time approximations for the stress, displacement and temperature
are obtained to examine their discontinuities at the respective
wavefronts. It is shown that the instantaneous change in pressure and
temperature at the cavity wall gives rise to elastic and thermal
disturbances which travel with finite velocities