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1 minutes read
2 October 2018

Nonlinear FEA + Snap-through with Tony Abbey

1 minutes read

This time I have something super special! We have been discussing different topics with Tony Abbey (FEtraining and Nafems) for quite some time. And now we decided to shoot a few videos about things that interest us in FEA.

On today’s video, we will talk about different approaches to snap-through as a difficult case of nonlinear FEA.

This will be fun, so hop in:

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Author: Łukasz Skotny Ph.D.

I have over 10 years of practical FEA experience (I'm running my own Engineering Consultancy), and I've been an academic teacher for a decade. Here, I gladly share my engineering knowledge through courses, and on the blog!

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Comments (4)

giovanni - 2019-06-04 10:04:55

hi. i have a problem with snap-through problem using MArc Mentat (transient analysis). i need to switch from two stable shapes using a incremental load. but when i remove the load, the plate go back at the first configuratio. why?

Reply
Łukasz Skotny Ph.D. - 2019-06-05 11:51:57

Hey!

There isn't a simple answer to this. If you are desperate and "flying blind" try loading with displacement instead of the force. Also, make sure to read manual on how the loads are "interpreted"... just to avoid pulling in the other direction instead of just removing the load :)

Good luck!
Ł

Reply
Prontubeam - 2018-11-25 16:55:09

Amazing video from Lukasz Skotny and Tony Abbey. You really made me smile, Tony, with ton frogs toy and the sound it makes. I used to play with them when I was a child and today I´ve learnt why they do that noice! I never wondered about it because I was too young and now you made me think about it and I really like it. I would also like to thank you for al these type of videos, I do really like them. And thank you, Lukasz, for reminding me to be careful with symmetry and instabilities. I always forget that.

Reply
Łukasz Skotny Ph.D. - 2018-11-26 07:34:37

Hey!

I'm really happy that you like it!

All the best!
Ł

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