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Infinitely stiff materials

Infinitely stiff materials

When doing FEM calculations parts that don't bend are often a useful tool but even when making a custom material there is a maximum stiffness you can apply.

5 Comments
DRoam
Mentor

Just removing or increasing the maximum stiffness would be enough. Currently the max stiffness that can be applied is 1.885E8 psi... which is only 6.5 times the stiffness of steel. It would be nice to be able to set it to something like 9E10 psi, which is 3,000 times the stiffness of steel (virtually infinitely stiff for all intents and purposes). Or, if it's possible, just let us set it to something ridiculous like 9E99 psi (trillions and trillions times the stiffness of steel... most definitely will not be deforming).

Tigerpirro
Advocate

@DRoam

Just increasing it is often enough but the maximum is in my opinion not quite high enough. So i would like to be able to set it to infinity or ridiculously high (as you wrote).

Thing is that some of the calculations i do is with mass above 750 tons and even if something is 10 times stiffer than steel, that will make it bend.

inv.ideareview
Autodesk
Thanks for sharing your Idea. We use this forum to guide product development and help users in the best way we can, based on voting. We occasionally merge Ideas or archive old ones to keep the forum working properly - it ensures there is room for people to review new Ideas and that the most relevant and meaningful ones can gain votes. We’re archiving this Idea because it's been on the board for well over a year and hasn't received many votes from the community. If you want to raise it again and try to gain more support, you're welcome to do so. We’ve found that pictures and mock-ups can help get concepts across and win more votes from other users. If you have questions or see a connection between this Idea and others, let us know. - Inventor product team (Inv.idea review)
inv.ideareview
Autodesk
Status changed to: Archived
 
Anonymous
Not applicable

I agree an infinite stiffness material would be useful in some cases.  Or at least be able to assign stiffness much higher than steel.  

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