The shaft shown the figure below, is supported by a bearing on the left end. The shaftalso supports a pulley on the right end, which rotates. The tensions in the belt of thepulley are F. =2,739 y and F,=1,362 N. Also, a completely reversed axial load of F11 N is applied to the right end. The shaft is made of UNS G10450 CD steel, with2.aground surface and 99 z reliability and operates at room temperature. Assume,K =1.35 for torque and formula 6- 34 to calculate Kfs'K, - 1K = 1 +(6-34)1+ va/ VrBending or axial:Va = 0.246 – 3.08(10)S+ 1.51(10-)S, – 2.67(10-*)S 50 s Su s 250 kpsiVa = 1.24 - 2.25(10-)S+1.60(10)$ – 4.11(10-1)S,340 S S 1700 MPa(6-35)Torsion:Va = 0.190 – 2.51(10-)S+ 1.35(10-), – 2.67(10-)S 50 < Su < 220 kpsiVa = 0.958 – 1.83(10-)S+ 1.43(10-")S-4.11(10-1)s340 < S S 1500 MPa(6-36)All fillet radius r-0.1dAll dimensions are in mm300D-30100:6001. Identify the critical point(s) on the shaft and show it clearly on the diagram.2. Draw the cartesian coordinate system and identify all the components of stresses at the criticalpoint(s) according to the cartesian coorduinate system.3. Calculate the resultant amplitude of stress.4. Calculate the resultant mean stress.5. Calculate the six Marin factors and endurance limit for the shaft.6. Utlize Gerber theory and estimate the fatigue factor of safety.7. Calculate the maximum stress and estimate the yield factor of safety.8. WIlII the shaft fail?9. Calculate the life of the shaft.

Given D = 300 Tension is =(F1- F2)d/2 =(1769-398) *3/20 205.6 N-m

Answered: ,362 N. Also, a completely revers

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Mechanical Engineering

,362 N. Also, a completely revers

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.

Question

The shaft shown the figure below, is supported by a bearing on the left end. The shaft
also supports a pulley on the right end, which rotates. The tensions in the belt of the
pulley are F. =2,739 y and F,=1,362 N. Also, a completely reversed axial load of F
11 N is applied to the right end. The shaft is made of UNS G10450 CD steel, with
2.
a
ground surface and 99 z reliability and operates at room temperature. Assume,
K =1.35 for torque and formula 6- 34 to calculate K
fs'
K, - 1
K = 1 +
(6-34)
1+ va/ Vr
Bending or axial:
Va = 0.246 – 3.08(10)S+ 1.51(10-)S, – 2.67(10-*)S 50 s Su s 250 kpsi
Va = 1.24 - 2.25(10-)S+1.60(10)$ – 4.11(10-1)S,
340 S S 1700 MPa
(6-35)
Torsion:
Va = 0.190 – 2.51(10-)S+ 1.35(10-), – 2.67(10-)S 50 < Su < 220 kpsi
Va = 0.958 – 1.83(10-)S+ 1.43(10-")S-4.11(10-1)s
340 < S S 1500 MPa
(6-36)
All fillet radius r-0.1d
All dimensions are in mm
300D
-30
100
:600
1. Identify the critical point(s) on the shaft and show it clearly on the diagram.
2. Draw the cartesian coordinate system and identify all the components of stresses at the critical
point(s) according to the cartesian coorduinate system.
3. Calculate the resultant amplitude of stress.
4. Calculate the resultant mean stress.
5. Calculate the six Marin factors and endurance limit for the shaft.
6. Utlize Gerber theory and estimate the fatigue factor of safety.
7. Calculate the maximum stress and estimate the yield factor of safety.
8. WIlII the shaft fail?
9. Calculate the life of the shaft.

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