Why following force displacement is lager?

Altair Forum User

I am practice the example like this connect

 

https://altairuniversity.com/analysis/structural/nonlinear/beam-comparison-to-nlstat/

 

but I don't know why I set the coordinate and assign the force

 

assigned beam's displacement is  lager than doesn't assigned beam

 

like this photo

 

Altair Forum User

Hi,

 

With Follower force, load follows the geometry as it deflects for this you need a coordinate system. 

Altair Forum User

Really thanks to your reply 

 

but I still don't konw why we need to set coordinate to it 

 

and when we don't set coordinate means the analysis is wrong?

 

thanks a lot

Altair Forum User

Hi,

 

Try this without coordinate system using FLLWER and FORCE1

Unable to find an attachment - read this blog

Altair Forum User

Altair Forum User said:

Really thanks to your reply 

 

 

@Prakash Pagadala thanks to your apply

 

and I use your model to set coordinate for case 1 and doesn't set for case 2

 

at displacement result are the same. What are they mean

 

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Altair Forum User

Hi,

 

You dont need a system with the model I shared. 

 

The model I shared uses FLLWER card to tell the solver that the load applied (FORCE1) is a follower load.