GACAP: A New Computer Code for Analysis of Symmetric and Nonsymmetric Cask Cross Sections

There are a number of different two-dimensional dynamic analysis methods used for analyzing impacts of nuclear shipping casks. The simplest method assumes the cask is a rigid bar and uses conservation of momentum and energy. An approximation of acceleration values and energy absorption in the impact limiters at each end of the bar results from this simple analysis. A more accurate analysis performs a time integration of the equations of motion. The simplest time integration treats the cask as a rigid bar with three degrees of freedom: horizontal and vertical translation of the center of gravity (CG), and rotation about the CG. Drop energy can be absorbed only in the impact limiters in this model.