Zapotec is a framework that tightly couples the CTH and PRONTO codes. CTH, an Eulerian shock physics code, performs the Eulerian portion of the analysis, while PRONTO, an explicit finite element code, performs the Lagrangian analysis. Zapotec controls the coupling between the two codes. In a Zapotec analysis, both CTH and PRONTO are run concurrently. For a given time step, Zapotec maps the current configuration of a Lagrangian body onto the fixed Eulerian mesh. Any overlapping Lagrangian material is then inserted into the Eulerian mesh with the updated mesh data passed back to CTH. Once the material insertion is complete, the external loading on the Lagrangian material surfaces is then determined from the stress state in the Eulerian mesh. These loads are passed back to PRONTO as a set of external nodal forces. Once the coupled treatment is complete, both CTH and PRONTO are run independently over the next time step.
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Last update: March 12, 2009
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