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Torsional Rigidity Modulus!!

4 REPLIES 4
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Message 1 of 5
jyothissurendran
2621 Views, 4 Replies

Torsional Rigidity Modulus!!

Anybody knows the equation for finding out "Torsinal Rigidity Modulus" for pipes.

I am craeting a personnel library for pipes. In the Family  Table editor there is a column named  Torsional Rigidity Modulus. I am trying to give an expression for this but i dont know the equation for the same.

 Hopes Somebody can help me for this equation .....

 

Jyothis Surendran
Autodesk Autocad 2014 & Inventor Professional Suite 2010
Windows 10
4 REPLIES 4
Message 2 of 5
blair
in reply to: jyothissurendran

Try here:  http://www.roymech.co.uk/Useful_Tables/Torsion/Torsion.html

 


Inventor 2020, In-Cad, Simulation Mechanical

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Message 3 of 5
jyothissurendran
in reply to: blair

Thanks Blair...

I got another one also, hopes thats much helpful : https://engineering.purdue.edu/~ahvarma/CE%20579/References/AISC_Torsion_Guide.pdf

 

Jyothis Surendran
Autodesk Autocad 2014 & Inventor Professional Suite 2010
Windows 10
Message 4 of 5
vex
Collaborator
in reply to: jyothissurendran

This may be of benefit as it seems Inventor desires the K of the equation
http://mathworld.wolfram.com/TorsionalRigidity.html

 

Which also corresponds to the Polar Moment of Inertia in the above listed links.

Message 5 of 5
JimRedfearn
in reply to: vex

I was also looking for this as we made some pipes for our content center which needed the Torsional Rigidity Modulus.

In our case the Torsional Rigidity Modulus formula is exactly the same as the Polar Moment of Inertia formula.

This formula can be verified by creating a pipe cross section sketch in a part file, RMB and select 'Region Properties'.

We used Excel to do all the calculations, easy once you have the correct formulas.

Thanks to the above posters for pointing out the right direction.

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