The Maximum Stress,Due To Combined Axial And Bending Loads

The Maximum Stress,Due To Combined Axial And Bending Loads

For short beams, subjected to both transverse and axial loads,

the stresses are given by the principle of superposition if the deflection due to bending may be neglected without serious error.

That is, the total stress is given with sufficient accuracy at any section by the sum of the axial stress and the bending stresses.

The maximum stress, lb/in2 (MPa), equals

where

P axial load, lb (N)

A cross-sectional area, (mm2)

M maximum bending moment, (Nm)

c distance from neutral axis to outermost fiber at the section where maximum moment occurs, in (mm)

I moment of inertia about neutral axis at that section,(mm4)