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Robot Structural Analysis

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Valued Mentor
tony.ridley
Posts: 652
Registered: ‎09-07-2011

Re: Curtain walls and modal analysis

06-25-2012 01:34 AM in reply to: Rafal.Gaweda

Here it is

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Artur.Kosakowski
Posts: 4,943
Registered: ‎12-17-2010

Re: Curtain walls and modal analysis

06-25-2012 02:26 AM in reply to: tony.ridley

Tony,

 

Am I right saying that you have only claddings (no materials properties assigned) in your model? I think that you should replace them with curtain walls that have their self-weight included in the modal analysis.



Artur Kosakowski
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Valued Mentor
tony.ridley
Posts: 652
Registered: ‎09-07-2011

Re: Curtain walls and modal analysis

06-25-2012 04:04 AM in reply to: Artur.Kosakowski

NO, I was running the model with claddings but also with user defined calculation options for mesh (check the "BONDEK" definition.  

 

I changed BONDEK to "Deck Slab" and it works OK.  

 

 

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Artur.Kosakowski
Posts: 4,943
Registered: ‎12-17-2010

Re: Curtain walls and modal analysis

06-25-2012 04:36 AM in reply to: tony.ridley

Tony,

 

Please look at post 5 and the pictures attached there. I'm very sorry if I'm wrong but it seems that you missed the fact that to include self-weight of claddings you have to use load to mass conversion (and switch off use of self-weight in the modal analysis parameters). I made a quick test with the 'right' settings and Bondek panel calculation model assigned to panels 83 and 1931 obtaining similar results for introduced self-weight case case and modal analysis total mass.



Artur Kosakowski
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Valued Mentor
tony.ridley
Posts: 652
Registered: ‎09-07-2011

Re: Curtain walls and modal analysis

06-25-2012 04:45 AM in reply to: Artur.Kosakowski

Yes thats what I was missing.  Thanks!

 

Tony

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