F= force delivered to end
A= cross-sectional area
Substituting the values of σ1, σ2, and σ3 from equations (55) and (56) into equation (7) yields
2. Biaxial Stresses.
The derivation of equation (10) is identical with that of equation (8), except that the axial stress, σ3, is zero. A derivation
of this equation and tables of values of W for values of Y are presented in a report on the design of gun tubes.