Calculating Torque using Steiner Theorem?

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When calculating torque for structural analysis of a wing, the upward shear force or lift acts at the aerodynamic center (a.c.). It's important to consider the moment about the a.c. when calculating torque about the shear center, which coincides with the a.c. The discussion emphasizes the application of Steiner's theorem in this context. Properly accounting for these moments is crucial for accurate torque calculations. Understanding the relationship between the shear center and aerodynamic center is essential for effective structural analysis.
tomliu93
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I am going to do some structural analysis of the wing. The upward shear force, or lift, is acting at the aerodynamic center. There is also a moment about the a.c. I am just wondering if I need to take the moment relative to the aerodynamic center into account when I calculate the torque about the shear center?
 
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The shear center is in the a.c.
Use the Steiner theorem.
 

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