symmetrical and unsymmetrical bending on a beam

Description:

• Symmetrical bending of a beam – also known as uniaxial bending – occurs when the load plane coincides with one of the main axes of the beam cross-section.
• The beam then deflects in the direction of the load and can be described by elastic lines.
• In unsymmetrical bending of a beam – also known as complex or biaxial bending – the main axes of the cross-section do not coincide with the direction of loading.
• To prevent torsion, the line of application of the load must pass through the shear centre. If it does not, the beam undergoes combined bending and torsion loading.
• FL 160is used to perform experiments relating to symmetrical and unsymmetrical bending and to combined bending and torsion loading.
• The beam under investigation is clamped into place on one end and loaded down at the free end.
• Two dial gauges record the horizontal and vertical deformation of the beam.
• The unit includes three beams with different cross-sectional profiles: I, L and U.
• The beam can be clamped with freedom to rotate in any direction.
• This enables investigation of loading along the main axis or of the general load case.
• An angle scale at the clamping point indicates the angular position of the beam.
• It is possible to adjust the load application point eccentrically, so that purely unsymmetrical bending or combined bending and torsion loading is investigated.
• The various elements of the experiment are clearly laid-out and housed securely in a storage system.

Technical Details:

Specifications:

• experimental unit for general and unsymmetrical bending of straight beams
• 3 beams: I, L and U profiles
• clamping flange of beam can be clamped in the pillar free to rotate in any direction
• clamping flange with angle scale to indicate the angular position of the beam
• eccentricity of load application points adjustable
• 2 dial gauges with bracket to record the horizontal and vertical deformation of the beam under load
• storage system to house the components

Technical Data:

• Aluminium beam
  • deformed length: 500mm
• Eccentricity of load application point: 0…25mm
• Dial gauges:
  • 0…10mm, graduation: 0,01mm
• Angle scale:
  • 0…360°, graduation: 1°
• Weights:
  • 1x 2,5N (hanger)
  • 1x 2,5N
  • 3x 5N

Dimensions & Weight:

• L x W x H: 700x350x400mm
• Weight: approx. 25kg
• L x W x H: 720x480x178mm (storage system)

Learning Objectives/Experiments:

• product moment of inertia (I_yz) and axial second moment of area (I_y, I_z)
• Bernoulli hypothesis
• symmetrical bending on a beam (uniaxial)
• with I-profile
• with L-profile
• with U-profile
• unsymmetrical bending (complex) on a beam with an L-profile
• calculation of the neutral fibres
• combined bending and torsion loading by way of eccentric force application
• determination of the shear centre on a beam with a U-profile
• familiarisation with shear flow (shear forces in a cross-section)
• comparison of calculated and measured values

Scope of delivery:

• 1 experimental unit
• 3 beams
• 2 dial gauges with bracket
• 1 set of weights
• 1 spirit level
• 1 hexagon socket wrench
• 1 storage system with foam inlay
• 1 set of instructional material

Features:

• symmetrical and unsymmetrical cross-sectional profiles: I, L and U
• combined bending and torsion loading by way of eccentric force application

Accessories:

• Optional: WP 300.09 Laboratory trolley

Due to the continuous development of our products, the goods supplied may vary in detail to that illustrated on this Website.