Shear area discrepancy

[GiorgosCham]

Hi,
While calculating the shear area of a Tee section with:
Beff = 0.80m
Hw = 0.80m
Bw = 0.30m
teff = 0.20m
I found different shear areas when comparing with an other commercial software.

[github-actions]

Thanks for opening your first issue in sectionproperties 🙌 Pull requests are always welcome 😉

[robbievanleeuwen]

Hi @GiorgosCham happy to look into this but I'm going to need some more information e.g. results, input for both cases, the software you used and how it's validated?

[GiorgosCham]

Hi @robbievanleeuwen ,
This is the input from etbs:

This is with sectionproperties module:

[robbievanleeuwen]

Thanks for clarifying - there is some discussion on EngTips on this topic.

I don't know how Etabs calculates shear areas, however the fact that the ratios between the shear areas and the total area are 2/3 and 5/6 respectively do not give me much confidence that there is any thorough analysis occurring.

sectionproperties uses an FEA approach based in elastic theory.

[GiorgosCham]

ok thank you!

[GiorgosCham]

Can you pls send me your email in case I want to message u directly on several other issues..

[robbievanleeuwen]

@GiorgosCham the best place for sectionproperties questions is in the discussions tab so that the community can benefit and contribute.

[GiorgosCham]

Hi Robbie,
What are the units of the material's density ? is it in kg/m³ cause if it is shouldn't we have 7850 as a value? why is it divided by 10^6?

thx
George

[robbievanleeuwen]

Units should be consistent. In my example I enter dimensions in mm, hence density is in kg/mm^3. Your conventions may be different.