# Transcribed Image Text: Problem 4: (P2, МЗ, Р3) Shaft design is one of the most critical tasks in any rotating macne.

Excerpt
find the value of the maximum stress induced by stress concentration at ts groove. (P3) Use for Part 4 of the question only! A 0.050 m 300 N В 0.250 m 200 N 550 N 0.250 m’ 400 N 0.150 m D 0.075 m y

Transcribed Image Text: Problem 4: (P2, МЗ, Р3)
Shaft design is one of the most critical tasks in any rotating macne. You work as a reliability engineer
for an automation company and your boss asked you to validate existing design parameters of a rotating
0.015-m-diameter solid shaft and pully assembly, shown in Figure.5. Ts task can be performed by:
Calculating the maximum torsional stress and deflection angle in the shaft. (P2)
Find the torsional component of strain energy Utorsion: (M3)
Use the torsional Castigliano’s Theorem to evaluate the shaft’s deflection. (M3)
If at point B a groove was made (See Figure) with a radius r=0.00107 m and span d=0.0143 m,
find the value of the maximum stress induced by stress concentration at ts groove. (P3)
Use for Part 4 of the question only!
A
0.050 m
300 N
В
0.250 m
200 N
550 N
0.250 m’
400 N
0.150 m
D 0.075 m
y