Hi there!
How could I model the reduced capacity of a steel column (HEA 160) with an opening like the one in the figure below? Thanks in advance for your comments
Cheers
Antonio
Modeling opening in steel column
I never tried , but maybe you can try modelling an equivalent section on the region of the hole using "Special" Section.
Check here https://help.autodesk.com/view/RSAPRO/2020/ENU/?guid=GUID-07F57C8A-E5C6-4A00-A92A-956EA0626D69 to see how equivalent properties are calculated
Or maybe you can create a custom section on "Section definition" module and then go to Ruser`s Section database and edit the section properties to what you need/want
Rafael Medeiros
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Thanks Rafa
I created a superbar made from two standard HEA160 and a custom special profile. That seems to work but at the steel design phase I get an error saying that the section is not supported by the code. Are there any standards I can use that allow this type of special sections? It should still be compatible with Eurocode 3 since is the standard I have to evaluate the structure to. Thanks in advance
Antonio
In this case that you want the bar to be designed ,maybe you should follow the last sugestion I made on my last message .
" Or maybe you can create a custom section on "Section definition" module and then go to Ruser`s Section database and edit the section properties to what you need/want"
Then ,save it to user´s database with the appropriate section on the dropdown menu, so it can be designed.
Open the section database and edit properties you want .Leave the section line before closing database
Fully Close RSA ,so user´s database can be updated.
Open and load the edited section into your model
Then on the the design module , edited properties will be used.
Rafael Medeiros
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Ax ,Ay,Az, Iy and Iz are easy to calculate. Just suppress the web area contribution caused by the hole presence.
For Ix , you can try creating the section on section definition module ,and see what it gives for IX.
Or you can use that equivalent compound section to check all these properties
Rafael Medeiros
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just check the equivalent compound section on the properties table
Rafael Medeiros
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HI Rafa
I'm not sure that will work. I have here a toy problem with four possible definitions and can't see any difference in the results. I have attached the file in case you can have a look. What do you think?
Then I don't see how to modify Wply and Wplz. And finally the section area properties don't seem to match those used in the member evaluation
Cheers
Antonio
Antonio ,
I am not familiar with Eurocode , but ,
1- Yes Ay and Az are different on the section design module compared to the values on properties tables and databases. This happens to all databases. I don´t know if it is code related.
2-Wply and Wplz are available on the database columms MSY and MSZ and correspond to the values used on design module.
3- One difference I noticed is that Your modified section has S275 as material while all the others on your model have Stainless steel 304L
Sorry to be not more useful. Maybe someone more familiar with Eurocode can help you better.
Did you try manual calculation for this example?
Rafael Medeiros
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Yes , something like below.
But design would have to be done manually
Rafael Medeiros
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Accepted solution
Just model the bar as a group of panels ( Search for and addin made by @Rafal.Gaweda that transforms a bar section on FE panels ) and then , connect this FE bar to the bar end nodes using rigid links as I shown above.
Rafael Medeiros
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Accepted solution
Here You are:
Rafal Gaweda
