5.16. Combined Tangential and Normal Stresses

Curved beams are often loaded so that there is an axial force as well as a moment on the cross section, as is shown in the example to follow. The tangential stress given by Eq. (5.70) may then be algebraically added to the stress due to an axial force P acting through the centroid of cross-sectional area A. For this simple case of superposition, the total stress at a point located at distance r from the center of curvature O may be expressed in the form

Equation 5.74