Bending Moments in a Beam

This structure illustrates and proves the basic theory of bending moments in a beam.

The experiment hardware is a simply supported beam ‘cut’ by a pivot. Students apply loads at set positions using hangers holding various masses. To stop the beam collapsing, a moment arm bridges the ‘cut’ onto a load cell, thus reacting to (and measuring) the bending moment force.

Learning Outcomes

  • Bending moment variation at the point of loading
  • Variation of bending moment away from the point of loading
  • Examination of various other loading cases, including loads traversing the beam

Essential Base Unit:

  • Structures Test Frame (STR1)

Essential Ancillaries:

  • Digital Force Display (STR1a)



Bending Moments in a Beam Image


Recommended Ancillaries:

  • Structures Software (STRS) for virtual experiments OR
  • Automatic Data Acquisition Unit (STR2000) for automatic data acquisition and virtual experiments


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