HFC31 Combined Shear Force and Bending Moment apparatus

HFC31 Combined Shear Force and Bending Moment apparatus

This compact bench top unit allows the observation and analysis of both Shear Force and Bending Moment within one unit.

A rigid, aluminium beam is cut into two unequal lengths, creating a ‘cut’ section. Each beam is then simply supported on vertical supports. Each support can be moved along the beam section length creating varied support positions. At the ‘cut’ section, a deep groove ball bearing in one beam runs within a block in the other beam. This allows for both vertical movement (shear) and rotation (bending) to occur.

The Shear Force is measured using a vertical analogue balance. A second analogue spring balance measures the direct load created in the beam ‘cut’ section and it’s associated mechanical moment lever arm set across the ‘cut’ section allows the bending moment to be calculated.

Special load hangers are provided that fit over the beams. The load hangers can be positioned accurately along the beams length by using the graduated scales attached to the side of the beams.

The smooth design of the beam sections allows a wide variety of unrestricted load positions to be used along the beam lengths.

A full set of slotted, calibrated weights is included along with a comprehensive instruction manual for lecturer and student, giving full details on apparatus assembly and operation as well as example results.

HFC31 Combined Shear Force and Bending Moment apparatus
  • To be part of a range of experiments designed to both demonstrate and experimentally confirm basic engineering principles
  • To observe the action of shear force and bending moment at a section in a beam and to compare the measured and theoretical values
  • To comprehend the action of shear and moment of resistance in a beam
  • To consist of 2 simple supports; a rigid aluminium alloy beam cut into two unequal lengths, with a frictionless hinge at the joint which permits minimal vertical movement, whilst allowing bending
  • Analogue spring balance measures direct force at the ‘cut’ section
  • Moment lever arm mechanism allows bending moment to be calculated
  • Multiple load positions achievable
  • To be bench top mounted
  • Set of slotted weights included
  • Load hangers supplied 2 year warranty
  • Visual demonstration of the Shear Force and Bending Moment at a 'cut' section in a beam
  • Comparison of experimental results with theoretical values and bending moment diagrams
  • Variation in bending moment for variations in load, load position and load arrangement