Autodesk Nastran In CAD - Transient Response

Vibration: Will vibrations from the machine operating cause a failure?
Will a new design to increase the capacity of this packaging machine function due to the machine operating vibrations. Watch how to simulate this vibration problem inside Autodesk Inventor using the new Autodesk Nastran In-CAD.

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Hi. Damping is reque4sted as %, it should be between 2 and 5, why the used has specified 0.05?