Nonlinear Dynamic Analysis Capabilities

[Andyf88]

Hello,

Can someone clarify if Nastran can do nonlinear dynamic analysis because in the link below it says it doesn't: 

https://www.autodesk.com/products/nastran-in-cad/compare 

but if in this other link it says it does:

https://knowledge.autodesk.com/support/nastran-in-cad/getting-started/caas/CloudHelp/cloudhelp/2018/...

Many thanks for your help.

Regards

[shigeaki.k]

Hello @Andyf88,

Mechanical Event Simulation (MES) is a nonlinear dynamic analysis where nonlinear, kinematic and rigid bodies are used in the analysis, as described here.  Nastran is capable of nonlinear analysis but the approach taken for dynamics analysis is different. For example, it doesn't have rigid bodies you can specify in dynamic analysis.

For a better idea of what Nastran In-CAD is capable of, it may be best to look at the description given in the Nastran In-CAD documentation in the link below.

http://help.autodesk.com/view/NINCAD/2018/ENU/?guid=GUID-A9EA5773-8576-4C19-ACEA-6D9638A10BA6

Regards,

Shigeaki K.

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[Anonymous]

Last time I checked, NIC did not have prescribed displacements (a very useful constraint for event simulation) for nonlinear dynamic, only nonlinear static.

[Andyf88]

Hi shigeaki.k,

Thanks for your response. Is this the same thing as "Dynamic Simulation Mechanics" for Inventor? And does this mean that this will not work for static structures on which you apply dynamic forces?

Thanks

[Anonymous]

Inventor Dynamic Simulation is for kinematic analysis, where the mechanism members are treated as rigid links and the output is the forces acting on the joints.