Seismic analysis of a liquid storage tank with a baffle

The effects of a rigid baffle on the seismic response of liquid in a rigid cylindrical tank are presented. A baffle is an additional structural elemen t which supplies a kind of passive control on the effects of earthquake mot ion. Fluid motion is assumed to be irrotational, incompressible and invisci d. The method of superposition of modes has been implemented to compute the seismic response. The boundary element method is used to evaluate the natu ral modes of liquid in a cylindrical tank. Linearized free surface conditio ns have been taken into consideration. (C) 1999 Academic Press.