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Old   April 12, 2010, 07:07
Default torque calculation
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Ciro Cannavacciuolo
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Hi to everybody,
I need to calculate the torque on the object I'm studying.

I usually use this expression:

torque_z()@object (1)

in order to calculate the z component of the torque.
In this case the software will automatically calculate this torque considering the origin global axis point as reference point.

In my case I need to calculate this torque considering not the origin of the global axis but the "moving" origin of a new local axis system.

Do someone know how I can modify the expression (1) in order to solve my problem?

Thanks in advance

Ciro
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Old   April 12, 2010, 18:35
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Glenn Horrocks
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A bit of basic mechanics can do it. Draw some vector diagrams and work it out.
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Old   April 14, 2010, 04:00
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Ciro Cannavacciuolo
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Hi ghorrocks,
thank you for your reply but I think I was not able to explain my problem well.
I needed to write an expression in CFX pre in order to calculate the torque respect a a moving centroid of the planing hull I'm studying.
In the meanwhile I think I've solved my problem...now I have only to test it!
Thank you again!
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