Normal Stress
Normal stress is simply the force per unit area and is denoted by the Greek letter (sigma).
The stress in a member of
cross-sectional area "A" subjected to an axial load (Force) is given from the following equation:
If normal stress is positive, it is called a "tensile stress" (i.e. it causes elongation in the member), and if it is negative, it is called a "compressive stress" (i.e. it causes reduction in the length of the member)
Shear Stress
Shear stress can be either single or doubled.
- Single shear stress is given from the following equation:
- Double shear stress is given from the following equation:
Bearing Stress
Bolts, pins, and rivets create stresses in the members they connect,
along the bearing surface, or surface of contact.
This kind of stresses is given from the following equation:
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Resources
- F. Beer. "Mechanics of Materials," Sixth Edition
