Shaft AD consists of three shafts AB, BC, and CD. Each porti…
Shaft AD consists of three shafts AB, BC, and CD. Each portion (AB, BC, and CD) of shaft AD is a solid circular rod with diameters and torsion loads as shown below: Given above problem, the customer of your project wants you as an FIT engineer to provide the following three part shaft analysis (each part is 5 points): Part 1: Find shaft portion with maximum torsion load. Show torsion diagram (VMT) to prove. Part 2: Find corresponding torsion stress for maximum torsion loading you found in Part A. Part 3: Does the torsion stress you found in Part 2 represent the overall maximum torsion stress in Shaft AD? If your answer is no, find overall maximum torsion stress and location in Shaft AD. If your answer is yes, explain why. Simple “yes” or “no” is not an acceptable answer to the customer. You will receive 0 credit for Part 3 without a detailed, unambiguous explanation supporting your argument for yes or no answer (explain why). Extra Credit (5 points each): Part 4: The customer being schedule, weight and cost conscious wants to further optimize shaft AD to reduce weight. Customer states that the minimum allowable shear stress is at least 150 MPa for shaft AD material (Stainless Steel: AISI 302 in Annealed Condition). Customer wants you to use a safety factor of 1.15 and not to consider other detrimental effects such as operating temperature. Provide one suggestions to reduce shaft weight, include rationale and show your work. You will receive 0 credit by simply stating a suggestion without supporting rationale (explain why). Part 5: What is the torsion load reaction at point D?
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