20.1.1. Flexure

Try these first

1. 1.

   What happens to a beam when it is subjected to bending?

   Hint

   Think about how a ruler bends when pressure is applied.

2. 2.

   Define the neutral axis.

   Hint

   Consider where stress is at its least when the beam bends.

3. 3.

   What does the term 'flexure' refer to?

   • Direct force application
   • Bending deformation
   • Tension
   • Compression

   Hint

   Think about how beams change shape under load.

4. 4.

   True or False: The neutral axis is the line of maximum stress.

   • True
   • False

   Hint

   Recall what happens to stress during the bending process.

5. 5.

   A simply supported beam of length 6 m carries a point load of 10 kN at its center. Calculate the bending moment and shear force at the support.

   Hint

   Use the equilibrium principles for balance.

6. 6.

   For a W-section beam, calculate the shear force at a section where the distance from the end is 2 m under a uniformly distributed load of 5 kN/m over 6 m.

   Hint

   Consider the area related to the distributed load.