Abstract:
Assuming a homogeneous pressure distribution in the volume of water, the pressure developed upon discharge in a spherical water-filled cavity surrounded by an infinite elastic medium is calculated as a function of the action integral $S=\int_0^ti^2(t)\,dt$, where i is the current in the discharge channel. It is shown that the maximum pressure in discharge significantly decreases for relatively soft chamber wall materials (minerals, concrete) as compared to the approximation of undeformable cavity walls.