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Shear Force and Bending Moment Diagram 

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Shear Force and Bending Moment Diagram  Name
(Code - ALABS-A169-028 ) | Altec Export Lab Specification:
Shear Force and Bending Moment Diagram : Shear Force and Bending Moment Diagram 

Statics observes the effect of forces on a rigid body, ignoring any possible deformations which may occur in the process. The forces are in equilibrium. In reality, forces always produce an effect in the component, such as deformation. These effects are investigated in the science of the strength of materials. The methods applied in strength of materials serve to design components so that they cannot be deformed or destroyed by applied forces. A simple example is a statically determinate bearing-mounted beam subjected to point loads. The reactions are determined from the conditions of equilibrium. To investigate the effect of the point loads in the beam, it is notionally split into two segments. Applying the method of sections, the internal forces and moments are plotted onto the two segments and calculated by way of conditions of equilibrium.  Bending Moment Diagram includes a beam mounted on two supports. The beam is cut at one point. At that point there is a low-friction hinge with two degrees of freedom. Two force gauges determine the internal reactions to the externally applied forces at the section. The shear force is recorded and displayed directly by a force gauge. The bending moment occurring at the section is recorded by a second force gauge acting on a fixed lever arm. This force readout, divided by 10, gives the bending moment in Nm. Adjuster nuts on the two force gauges are used to align the beam horizontally and balance out any deflection. In evaluating the experiment it becomes clear that the shear force, as opposed to the bending moment, is mostly negligible when designing components. The various elements of the experiment are clearly laid-out and housed securely in a storage system. The complete test setup is arranged on a frame. The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.


1. Determination of shear force and bending moment on beam mounted on 2 supports
2. Measurement of shear force and bending moment in beam by low-friction hinge with 2 degrees of freedom
3. Position of hinge at 1/3 span
4. 2 bearing supports
5. Loading of beam by 1 to 3 point loads
6. Force gauges to indicate shear force and determine bending moment
7. Bending moment determined by force measurement and lever arm
8. Adjuster nuts for horizontal alignment of beam
9. Steel rule to determine positions of point loads
10. Storage system to house the components

Technical Data:

- total length: 1000mm
- span: 800mm

Measuring ranges

- bending moment via force gauge and lever arm
lever arm: 100mm
Force gauge: -100…+100N
bending moment: -10…+10Nm
- shear force: -50…+50N
- steel rule: 1000mm, graduations: 1mm

Set of weights

- 3x 1N (hangers)
- 12x 1N
- 9x 5N
- max. weight load per hanger: 20N



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