Dynamics and Responses of a Single Flexible Block on a Vibrating Floor

Graphite blocks constituting the reactor core of a typical prismatic type HTGR form a group of graphite block columns. The seismic analysis of a HTGR core structure composed of stacked prismatic graphite blocks has been an important design issue. In a tall column of stacked graphite blocks, the flexibility of blocks can not be ignored in the dynamic analysis. This paper proposes a dynamic model of flexible block and presents response analysis results of a single flexible block on a vibrating floor, and compared them to the classical ones of with a rigid assumption.