2.4 Workflow

  • Define the interface
    Identify the coupling points of the component to its neighboring substructures. At each interface a Virtual Point can be defined: a 6-DoF ‘node’ that allows to couple the FRF model.
  • Prepare the measurement
    Use the CAD-based measurement preparation to design the experiment. The Virtual Points are typically not accessible for measurement themselves; therefore acceleration sensors and (force) inputs are placed close to the Virtual Points. DIRAC will transform all the data as if it were measured at the Virtual Point. Sensor specifications are all set in the sensor database in DIRAC to make the actual measurement plug & play.
  • Perform the measurement
    First, set up the hardware according to the prepared experiment. During the measurement DIRAC will share live feedback about the model quality, using the sensor specifications, the geometry of your experiment and smart background checks. The 3D viewer guides the process.
  • Analyze the data
    Switch to the Analyze mode to see how the model is created from the measurement data. The operational deflection shape (ODS) is visualized, and the advanced browser allows to quickly view the measurement results as a whole or zoom in on a single FRF.
  • Export the VP FRF model
    Use the FRF model in MATLAB, in ASAM-ODS viewers or in simulation packages as MSC Nastran and Ansys for further analysis! All data formats are open to ensure DIRAC fits into existing workflows.

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