6.1 – UNSYMMETRIC BENDING

For each of the questions below, choose the correct answer True or False.

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1. The bending normal strain varies linearly across the cross section for non-homogenous cross section in unsymmetrical bending.
2. The bending normal stress varies linearly across the cross section for non-homogenous cross section in unsymmetrical bending.
3. The maximum bending normal stress in unsymmetrical bending of beams is either at the top or bottom surface of the beam.
4. The maximum bending shear stress in unsymmetrical bending of beams is at a point furthest from the neutral axis.
5. The orientation of neutral axis may change along the length of the beam in unsymmetrical bending.
6. In unsymmetrical bending of beams the direction of beam deflection is always perpendicular to the neutral axis at any cross section.
7. If the cross area moment of inertia Iyz = 0, then buckling will take place either about the y or z axis.
8. Shear center lies on the axis of symmetry for bending shear stresses.
9. The location of the shear center depends upon the loads applied.
10. For pure bending, the external forces must act along the line joining centroid and shear center of the cross section.

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