Determination of Deflection in Over Hanging Beams
Apparatus:
Model of beam, Weights, Deflection Gauge, Weight Hangers.
Objective:
The purpose of this experiment is to record the deflection in beam experimentally and then compare it with theoretical value.
Deflection:
Deflection is a term which is defined as the distance moved by a point on the axis of beam before and after application of force
Determination bar:
Those bars in which unknown reactions can be found using available egs of equilibrium are called determination.
Procedure of Experiment:
-
Take the beam model and place it on the table. it should be kept horizontally and firmly.
-
Determine the length of the beam and also dimension of cross section.
-
If the model is an over hanging bema then also determine the length of over hanging portion.
-
Set the deflection gauge at a point where deflection is to be measured.
-
Make the reading of the deflection gauge dial indicator to zero before applying the load on bar.
-
Now apply the load with the help of load hangers and record the loaded weights location from left side of the beam.
-
Now record the deflection 1st of all at the smaller dial of the gauge. It should be read as it shows the number of rotations.
-
One complete rotation is equal to 1mm deflection