Machine Design

CHAPTER 15

Shafts

Chapter Objectives

1. Identify the location of each element (as gears, pulleys) on the shaft.

2. Calculate the load due to each element on the shaft, and determine the horizontal and vertical components of these loads.

3. Draw the torque distribution diagram along the shaft.

4. Draw the BM diagrams due to horizontal and vertical loads for the shaft and calculate the resultant BM.

5. Determine equivalent twisting moment and find the section where it occurs.

6. Determine diameter of shaft on the basis of equivalent twisting moment and allowable shear stress.

7. Increase the diameter of the shaft slightly at the section of keyway so as to account for reduction in strength due to keyway.

8. Identify the type of bending moment and type of twisting ...