TSIM architecture in the Abaqus environment

In the Abaqus environment, you can use the high-performance SIM software architecture to perform modal superposition dynamic analyses. The SIM architecture is much more efficient than the traditional architecture for large-scale linear dynamic analyses (both model size and number of modes) with minimal output requests.

Note:

The SIM architecture is available in Abaqus version 6.13 and higher.

SIM-based frequency extraction procedures write the mode shapes and other modal system information to a special linear dynamics data (.sim) file. By default, the software writes the data file to the scratch directory and deletes it at job completion. If you request a restart, however, the software saves the file in the user directory. All subsequent mode-based steady-state or transient dynamic steps in an analysis automatically use this linear dynamics data file (and by extension the SIM architecture). If you restart an analysis that uses the SIM architecture, you must include the linear dynamics data file.

For more information, see Using the SIM architecture for modal superposition dynamic analyses in the Abaqus Analysis User’s Guide.

Using the SIM architecture

To use the SIM architecture, select the Activate SIM Software Architecture check box for the initial frequency extraction procedure in the General tab of the Solution Step dialog box.

The option corresponds to the SIM parameter for the *FREQUENCY keyword.

Where do I find it?

Application	Pre/Post
Prerequisites	A Simulation file as the work part and displayed part Abaqus as the specified solverFrequency Perturbation as the specified solution step
Simulation Navigator	Right-click a Simulation→New Solution
Location in dialog box	Solution Step dialog box→General→Activate SIM Software Architecture

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