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Nastran environment > Nastran multi-step nonlinear analysis (SOLs 401 and 402) > Cyclic boundary coupling in Simcenter 3D Multiphysics

Simcenter 3D Multiphysics workflow—cyclic symmetric boundary coupling

Step Summary Detailed help topic
1. Set up the cyclic symmetric model Define a 3D-Solid that represents a portion of the entire model.
2. Create the Simcenter 3D Multiphysics solution Create a new solution with Solver set to MULTIPHYSICS and Analysis Type set to Structural, Coupled, or Thermal. Create or modify a solution
3. (Optional) For Structural and Coupled solutions only, set up the Cyclic Modes solution step Create a Cyclic Modes type of solution step to support normal modes at higher harmonic indices. Create or modify a solution step or subcaseSpecifying harmonic index numbers
3. Define the global cyclic analysis coordinate system When you create or edit the FEM, create a global cyclic analysis coordinate system to define the axial direction for the model. Simulation coordinate systemsCreate coordinate systems
4. Create the Cyclic Symmetry simulation object to define the boundary coupling Use the Cyclic Symmetry command to define the regions to couple, set tolerances, and define thermal parameters for Thermal or Coupled solutions. Define boundary coupling using the Automatic methodDefine boundary coupling using the Manual method
6. Solve and post-process the results Solve the solution and view the results in post-processing. Solve the modelSet up a cyclic symmetric display
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Define boundary coupling using the Automatic method

Define boundary coupling using the Manual method

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Cyclic symmetric boundary coupling

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Simcenter 3D Multiphysics workflow—cyclic symmetric boundary coupling, Simcenter 3D 2021.1 Series

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Source: https://docs.sw.siemens.com/en-US/doc/289054037/PL20200601120302950.advanced/xid1096474_v1 · retrieved 2026-07-17