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Huge deflections

3 REPLIES 3
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Message 1 of 4
bartosz_borowiak
692 Views, 3 Replies

Huge deflections

I just run an analysis and got very weired results. Deflection is about 5mm at the end and about 6200 in the mid span of some beams ( see pic attached) I checked gemotery and relaeases and node looks ok. Any ideas?

 

File

 

Untitled.png

3 REPLIES 3
Message 2 of 4

Correct model first to get rid of instabilities

 

instbor.jpg



Rafal Gaweda
Message 3 of 4
dimogrec
in reply to: bartosz_borowiak

You have too many bar releases -> big number of degrees of freedom

Also avoid bar releases on pinned base. Example in picture : pinned base by definition has free Rx,Ry,Rz so you don't need to release also the bar (bracing) edge

 

release.jpg

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Message 4 of 4
bartosz_borowiak
in reply to: dimogrec

Thank you so much.

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