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AuthorJ. Wan, M. S. Shephard and O. Klaas
TitleAutomation Implementation of Mesh Enrichment Based Forming Process Simulation
Year2001
InstitutionScorec
AbstractIt is critically important to develop a procedure by which the simulation and mesh enrichments can be automatically run without user intervention till the simulation is completed. This document describes the implementation of a scripting-based procedure that can accomplish the task. DEFORM can be run in two modes, the GUI mode and the text-only mode. The text -only mode of DEFORM will be run so that the scripting-based automation procedure can be implemented. The text-only mode of DEFORM is based on scripts. Each functionality, like preprocessing, rezoning, simulation running, etc. is called from a specific script. The scripts are glued together by a main control program that calls the scripts sequentially. State information between the modules is transferred via temporary files. The data flow of the mesh enrichments based forming process simulation is illustrated below. Figure 1 shows a version based on DEFORM’s rezoning function. When we add our procedure then rezoning happens with the mesh modification and the data flow is shown in Figure 2. In the context we describe the different scripts along with the required keystrokes used to run the DEFORM functionalities and the necessary modification on the required user defined FEM routines in the DEFORM’s rezoning based version. We will also describe the temporary files that need to be created. Since a newly-provided user defined subroutine, USRMSH, needs to be called during the simulation to pass the object meshes, boundary conditions and solution fields from the FEM engine at the starting point of a step in which the mesh of the workpiece becomes invalid, the automation program can be run with DEFORM v3.30 or above.
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