Development of a Dynamic Finite Element Computer Code for the Inelastic Analysis of Cask Structures-Pronto 3D

Dynamic analyses of radioactive material packagings require accurate three-dimensional models of impact and puncture events. PRONTO 30, a three-dimensional transient solid dynamics computer code, was developed to simulate and analyze impact events and associated problems. Examples of impact problems analyzed with PRONTO 30 are provided. The analysis of a sphere impacting into a deformable flat plate at high velocity demonstrates the proper operation of the contact surface t slide line) algorithm in the code. An analysis of a generic lead-stainless steel cask impacting onto an unyielding rail further demonstrates the utility of the contact surface algorithm and the ability to model inelastic deformations and finite rotations.