Coupled Lagrangian/Eulerian simulation of blast/structure interaction with large-scale parallel computing

摘要

The implementation of two new algorithms for the Eulerian shock physics code CTH is described. These algorithms permit very efficient calculation of blast/structure interaction problems. The first algorithm is a rigid obstacle algorithm and allows the insertion of non-deforming bodies, either fixed or with a prescribed velocity, into the Eulerian mesh. The second algorithm is a structural code interface that allows for the coupling of loads from an Eulerian computation onto the surfaces of a finite element mesh. Together, these two new algorithms represent a significant enhancement to available computational tools for modeling blast loads onto structures. Example calculations demonstrate the utility of these algorithms for simulation of blast damage to structures.