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djan0521
Posts: 3
Registered: ‎09-12-2012
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Mode Shape X & Y components of Center of Diaphragm

804 Views, 13 Replies
09-12-2012 09:14 PM

Hi,

 

I'm using Robot for a 63 story building. My Boss ask me to generate the X and Y components of the Mode Shape displacement (unitless) for every floor similar to the attached table from ETABS. Can we do it in Robot? This data wil be used for wind tunnel test. Thanks

 

Kind Regards,

Jan

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Rafal.Gaweda
Posts: 4,935
Registered: ‎04-26-2010

Re: Mode Shape X & Y components of Center of Diaphragm

09-13-2012 12:32 AM in reply to: djan0521

Not for a floor = center of diaphragm; for real nodes only , you an get them in Modal Analysis Results table



Rafal Gaweda
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Member
djan0521
Posts: 3
Registered: ‎09-12-2012

Re: Mode Shape X & Y components of Center of Diaphragm

09-26-2012 10:54 AM in reply to: djan0521

Thanks, I found it.

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Active Member
trandtrung00
Posts: 8
Registered: ‎02-25-2013

Re: Mode Shape X & Y components of Center of Diaphragm

08-18-2013 02:53 AM in reply to: djan0521

Hi Dian021 ,I had the same problem but i could not find the result as you found.Can you show me where is it in the Robot program or just post some picture of it.

Thank regard !!

This is the result i hae in Etabs but I can't find it In Robot .Please help !

Etab Building Modal.png

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Distinguished Contributor
mpcloob
Posts: 121
Registered: ‎12-11-2012

Re: Mode Shape X & Y components of Center of Diaphragm

08-18-2013 11:19 PM in reply to: Rafal.Gaweda
in the name of GOD .
hello rafal
please attach a picture for this your answer....thanks
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Rafal.Gaweda
Posts: 4,935
Registered: ‎04-26-2010

Re: Mode Shape X & Y components of Center of Diaphragm

08-19-2013 12:28 AM in reply to: mpcloob

eigenv.jpg



Rafal Gaweda
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Distinguished Contributor
Tuctas
Posts: 162
Registered: ‎10-10-2012

Re: Mode Shape X & Y components of Center of Diaphragm

08-19-2013 05:00 AM in reply to: djan0521

 The displacement values of any node of the structure corresponding to a given eigenshape can be viewed when choosing the option “Deformations” in the “Diagrams for buildings” (see attached). They should also be displayed in a table form.

 

  Keep in mind that the values that are viewed with the above option are the total ones (i.e the square root of the sum of squares of each component) and that they are not normalized to 1.

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Active Member
trandtrung00
Posts: 8
Registered: ‎02-25-2013

Re: Mode Shape X & Y components of Center of Diaphragm

08-21-2013 04:26 AM in reply to: Tuctas

Thank Rafal ,Tuctas for  answer 

I am sorry for my question but when i try to follow your post it does not happen as you said .I use RSAP 2011.And the value of Eigenvector in modal analysis table are all node of modal,it hard for me to find the value i need as Etab.Sorry for my English

Many thanks!

my modal 

 

1.png

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Active Member
trandtrung00
Posts: 8
Registered: ‎02-25-2013

Re: Mode Shape X & Y components of Center of Diaphragm

08-21-2013 04:36 AM in reply to: trandtrung00
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Rafal.Gaweda
Posts: 4,935
Registered: ‎04-26-2010

Re: Mode Shape X & Y components of Center of Diaphragm

08-21-2013 05:56 AM in reply to: trandtrung00

Every node belonging to each diaphragm in your model will have the same UX UY so take any of them: http://screencast.com/t/47Nmw6Ti



Rafal Gaweda
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