This paper concentrates on the primary theme of Calculate the bending moments at the central zone of the beam (where strain gauges are located) for each loadings and enter into Table 2. (5%) in which you have to explain and evaluate its intricate aspects in detail. In addition to this, this paper has been reviewed and purchased by most of the students hence; it has been rated 4.8 points on the scale of 5 points. Besides, the price of this paper starts from £ 1080. For more details and full access to the paper, please refer to the site.
Part (a) – Strain vs bending moment
1. Calculate the bending moments at the central zone of the beam (where strain gauges are located) for each loadings and enter into Table 2. (5%)
2. Correct the strain reading values to zero (Take note of the signs) and enter into Table 2. (5%)
3. From your results, plot a graph of bending moments (y-axis) against strain (x-axis) for all 9 gauges on the same graph. (5%)
4. What is the relationship between the bending moment and the strain at various positions? (5%)
5. What do you notice about the strain gauges readings on opposite sides of the section? Are they identical? Discuss. (10%)
Part (b) – Neutral axis
1. Carefully measure the actual vertical position of the strain gauges and enter into Table 3 (consider bottom of the beam as datum).
2. Calculate the average strains readings (corrected) from each pairs of gauges (on opposite sides) and fill up Table 3. (5%)
3. Plot the strain against the relative vertical position on a same graph for each value of bending moment. (5%)
4. Calculate the theoretical values of centroid and second moment of area (about the centroid) of the beam section. (You may use a Vernier to measure the exact size of the section) (10%)
5. Plot the location of centroid on the strain vs position graph (use the same graph from no. 3). (5%)
6. What is the value of strain at the centroid? (5%)
7. What does this imply? (10%)