# What does an off center applied torque do?

by Seppe87
Tags: applied, moment, offcenter, torque
 P: 9 I know that if a force is applied off center (as in: not in the center of gravity), one can split them up in an equal force and a moment in/about the center of gravity. But what about a torque applied offcenter? Maybe this image clarifies my problem: So the force will be split op in a force-moment couple at the center of gravity... But what to do with the applied torque? (Or moment, depends on how you look at things)
 Mentor P: 10,499 The effect of a torque (without a net linear force) does not depend on the position where you apply it. It leads to the same angular acceleration everywhere.
 P: 9 And what about the stresses? I can imagine that the left side of the cross section is experiencing more stress in this case than if the torque would be applied in the center.
P: 9

## What does an off center applied torque do?

Okay, I redrew the whole thing, now with correct axes.

Here I already split the force in a force in the centroid and a moment around the centroid. My question is: How do I find the maximum stress in this cross section? Where is it going to fail first? I want to know how thick my walls have to be depending on the y-value of the application point.
 Mentor P: 10,499 If you apply the force to a single point, I would expect maximum stress at this point (in addition to the center, if it is fixed there).
 P: 737 Does that moment arrow imply that there is a moment being put onto the disc about that point, into the page?
 P: 9 the moment arrow represents the axis around which the moment is acting. Using the right-hand rule, one can see that the left must be in tension and the right in compression.
Engineering