Abstract
In this study, we consider a cask-canister system as a dual structure. In an analytical model, the cask is treated as a free-standing structure on a horizontal floor, and the canister and the cask are connected by springs as a dual structure system. The equations of motion are derived for rocking motion when the floor is subjected to the horizontal earthquake excitations. Simulation studies are performed. The angle of the cask against the floor and the relative displacement of the canister against the cask are evaluated, and the effects of the canister on the cask motion are discussed.
