Sunday, April 29, 2012
The "New" Understanding of Anatomy: Pre-Stressed Systems
A bicycle wheel, although functionally equivalent to the wagon wheel, is a much more sophisticated and efficient contruction. The spokes of a bicycle wheel are PRE-STRESSED...therefore they have a pre-existing tensional component to them (green arrows).
As the wheel rolls, ground force reaction enters from the bottom, thereby reducing the tension on the bottom spokes...which consequently results in an INCREASE IN TENSIONAL SUPPORT FROM THE UPPER SPOKES. This global response allows the wheel to absorb significantly more force and stress without failing (breaking). The question may arise again: How in the world is this applicable? The body is not a bicycle wheel! Indeed, it is not...but it IS pre-stressed!