Structures under
Combined Loading
stress occurs on the top fibers of the beam. Here the axial and bending stresses add
directly. where σaxial = P/A
= 500/2 =
250 psi I =
(1/12) bh3 = (1/12)(1)(23) = 2/3 in4 σbend)max =
Mc/I = 2500 lbin)(1 in) / (2/3 in4) =
3750 psi The
figure below shows and element on the top fibers of the beam. Click
here for Mohr’s Circle showing the principal stress and maximum shear stress. Click
here for another example. |
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