Objective
1. To study the vertical equilibrium of (a) a simply supported beam
2. To determine the reactions of the beams by (a) the experimental set-up and (b) by using the principles of statics and method of consistent deformation
Apparatus
TecQuipment SM 104 Beam Apparatus Mk III
Figure 1
Experimental Procedures
1. Set up the beam AC with a span of 675mm (as shown in Figure 1).
2. Place two hangers equidistant (100mm) from the mid-point of the beam.
3. Unlock the knife-edges of the load cells.
4. Place a dial gauge over the left-hand support A. Adjust the dial gauge to read zero. Move the same dial gauge to the top of support C, and then adjust the height of the knife-edge so that the dial gauge reads zero.
5. Remove the dial gauge.
6. Adjust the load cell indicators at the supports to read zero.
7. Apply loads as shown in Table 1 to the hangers.
8. Record the readings of the load cells in Table 1.
9. Use the calibration charts to obtain the support reactions at A & C, and enter the reactions in Table 1.
Summary of Data
The results of the test are shown below in Table 1. This table shows the reactions at the supports based on the applied load. Noted that both experimental and theoretical results are recorded/calculated. The differences and the percent error of experimental results with respect to the applied load are denoted in the columns in magenta. The differences and the percent error between the experimental results and the theoretical results at support A are denoted in the columns in green. The differences and the percent error between the experimental results and the theoretical results at support C are denoted in the columns in cyan.
Table 1
Discussion of Results
In general, the experimental results should be very close to the theoretical results. However, it was noticed that the experimental results is somewhat different from the