The fluid-solid interface of prestressed egg-shaped digester is conical, so the dynamic liquid pressure and the resulting reactions are rather difficult to gain[
]. Through the computer program ANSYS, seismic evaluation of the digester is performed using a 3D finite-element model that includes the effect of fluid-solid interaction[
]. Comparisons of calculated responses and those of shaking table tests show reasonably good agreement.
By using the probability density evolution method for random vibration analysis of stochastic structures which has been developed in recent years [
], reliability of the prestressed egg-shaped digester is investigated. The results demonstrate that the proposed method is efficiency for larger structures.