HST9 Shear Force in a Beam

HST9 Shear Force in a Beam

When simply supported beams are loaded two main forces are created, bending and shear. These forces are internal and cannot easily be seen. This experiment brings these internal forces from inside the beam to outside the beam so that students can visually see the beam deflecting and shear forces acting.

Each beam is simply supported on vertical supports which can be easily moved  to create varying support positions and beam spans. At the ‘cut’ section, bearings in one beam straddle a vertical bearing track in the mating beam. This ensures free vertical movement for monitoring shear forces. Although beam bending is permitted, it is counteracted by the bearings and a tension spring supported horizontally from underneath the beams.

The force transducer is supplied with a connection lead to connect its output directly into the HDA200 Interface (sold separately). Special load hangers are provided that fit over the beams. The load hangers can be positioned accurately along each beams length by using the graduated scales attached to the side of the beams. A full set of slotted, calibrated weights is included.

A comprehensive instruction manual for lecturer and student, giving full details on apparatus assembly and operation as well as example results. All necessary assembly and operational tools are provided.

Essential accessories: HST1, HDA200

HST9 Shear Force in a Beam
  • To consist of 2 simple supports; a rigid aluminium alloy beam cut into two unequal lengths, which permits vertical movement, whilst resisting bending
  • Beam lengths of 600 and 300mm
  • Electronic force transducer measure direct shear force at the ‘cut’ section
  • Multiple load positions achievable
  • Force transducer output to be fed into HDA200 Interface (sold separately)
  • Calibrated weights set supplied: 1 x 2N; 1 x 5N; 1 x 10N
  • Load hangers supplied
  • Must be used with HST1 universal Frame and Stand (sold separately)
  • Must be used with HDA200 Interface (sold separately)
  • Comprehensive instruction manual provided
  • 2 year warranty
  • To observe the action of shear at a cut section in a simply supported beam
  • To compare the measured and theoretical values of shear
  • Visual demonstration of shear force at a 'cut' in a beam
  • Creation and use of shear force diagrams
  • Shear force variation with varying point loads, load positions and load arrangements