Produced by external loads applied towards one another on opposite surfaces in opposite directions
Compression
The force that pulls or stretches tissue
Tension
Occurs when equal but not directly opposite loads are applied to opposing surfaces forcing those surfaces to move in parallel directions
Shearing
When 2 force pairs act at opposite ends of a structure
4 point bend
When 3 forces cause bending
3 point bend
When an already bowed structure is actually loaded.
Axial bend
Caused by twisting in opposite directions from the opposite ends of a structure cause shear stress over the entire cross section of that structure
Torsion