Dynamic fluid-structure-soil interaction: applications in earthquake engineering

Abstract

A new discrete model is presented for the evaluation of the dynamic characteristics, i.e. eigenfrequencies and eigenmodes, of tanks of arbitrary shape and fill level. The accuracy and efficiency of the proposed methodology is demonstrated via a number of comparison studies. The above discrete model is combined with structural and soil simulation models for the efficient dynamic analysis of 3-D tanks under earthquake excitation. The obtained results are in excellent agreement to those obtained using detailed analytical and FEM models.