About deflection

The deflection of the tube plate in the tower seems to have deflection. What's the meaning of this deflection?
2017-10-16 Reply
Deflection is the displacement caused by the deformation of the member
2017-10-16 09:32:00 Reply
Deflection can be said to be a variable, with the change of X, and finally can draw the deflection curve
2017-10-16 09:34:39 Reply