Principal Shear Stresses (cont.)

• The numeric values of the Principal shear stresses are:

Since ?1 > ?2 > ?3, ?2 is the maximum shear stress

i.e.

• In materials that fail by shear (as most metals do) the orientation of the maximum shear is v-important

(4-31)

(4-32)

Previous slide

Back to first slide

View graphic version