Explicit Dynamics in Inventor Nastran | Autodesk Virtual Academy

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The majority of design validation problems involve the effect of slow, mostly gradual mechanical loads. However, specialized design problems like impact, blast loading, crash tests etc, involving short-duration high-pressure loads, generally require the use of advanced (explicit) dynamics methods to obtain reliable results. In this webinar, we cover:
-Understanding the types of nonlinearity in FEA
-Implicit vs Explicit Dynamics
-Explicit Dynamics workflow in Inventor Nastran
#InventorNastran #AutodeskTutorial #AVA

[@mathumphreys]

Hi, I just re-watched this video and heard your comment about meshing with linear elements for a non-linear solve. This seems like a pretty important instruction and one that I have never heard before. I have watched your other videos and don't remember ever hearing this. Can you please point me to your videos where you discuss this issue so that I can understand it better as I haven't heard this before.

[@michaeljones1410]

There is a book out with discussing Inventor NASTRAN 2020, "Up and Running with Autdesk Inventor NASTRAN 2020 - Simulation for Designers" by Wasim Younis.

[@scottstewart6624]

Have them. Thumbs up!

[@KETIVTechnologies]

We will check it out! Thanks!

[@muhammedsultanmustapha6571]

Hey, I just want to find out how where explicit dynamics is because I don't see it in my version of inventor Nastran 2020.1,

[@marcocalderon5110]

Hello, Did you conduct any analisis using composites?

[@nickysixx2480]

i thought linear tets produce garabage results? Shear locking etc.

[@vidushivinod6659]

Parameter dependent loads?
In my problem statement the load depends on the separation between two surfaces (the two surfaces are on different parts such that the separation is not constant) and also on the velocity of one of the parts. How, if at all, can I apply such a load?

[@KETIVTechnologies]

Thanks for reaching out. I'm not sure if that's possible or not honestly. Can you reach out to our support email at [e-mail]? We can take a closer look into this issue there.

[@shm-ing.5721]

Hi, Why put such small time intervals?

[@KETIVTechnologies]

Hi, typically the smaller the time interval, the better accuracy/resolution you can expect form your results. It'll depend on your situation, but this is especially relevant for very quick events like shown in the video. For more information, feel free to email [e-mail]

[@Dcassimatis]

Not sure why you showed everything but the connection setup

[@KETIVTechnologies]

Thanks for watching. Feel free to email us at [e-mail] if you have any more questions