Calculate the mean and alternating values of th Calculate the mean and alternating moments an Calculate the endurance limit Find the factor of safety by using DE-ASME EIli

Mechanics of Materials (MindTap Course List)
9th Edition
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Barry J. Goodno, James M. Gere
Chapter3: Torsion
Section: Chapter Questions
Problem 3.4.8P: Two sections of steel drill pipe, joined by bolted flange plates at Ä are being tested to assess the...
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machined to dimensions. It is welded to a fix support at C and subjected to a loading by fluctuating
Question 1
The assembly consists of two sections of steel shafts made off AISI 1030 Hot-rolled steeljand
force E as shown below. Force F fluctuates between 100 N and 700 N.
KR (both)
Due to the geometry of the shafts, a fatique stress concentration factor of 1.4 and a fatigue shear
stress concentration factor is 1.1 are induced. The reliability percentage is 99.9%.
Shait AB hás a length of 400 mm and a diameter of 20 mm. Shaft BC has a length of 500 mm and
a diameter of 30 mm.
By considering the stresses at support C:
1. Calculate the mean and alternating values of the force F
2. Calculate the mean and alternating moments and torques at C
3. Calculate the endurance limit .
4. Find the factor of safety by using DE-ASME EIliptic failure theory
B
Le=500 mm
dac 30 mm
CAn=400 mm
dan 20 mm
150 mm
200 mm
+965 55842901
Fekry@kitechnology.org
hnolegy
Transcribed Image Text:machined to dimensions. It is welded to a fix support at C and subjected to a loading by fluctuating Question 1 The assembly consists of two sections of steel shafts made off AISI 1030 Hot-rolled steeljand force E as shown below. Force F fluctuates between 100 N and 700 N. KR (both) Due to the geometry of the shafts, a fatique stress concentration factor of 1.4 and a fatigue shear stress concentration factor is 1.1 are induced. The reliability percentage is 99.9%. Shait AB hás a length of 400 mm and a diameter of 20 mm. Shaft BC has a length of 500 mm and a diameter of 30 mm. By considering the stresses at support C: 1. Calculate the mean and alternating values of the force F 2. Calculate the mean and alternating moments and torques at C 3. Calculate the endurance limit . 4. Find the factor of safety by using DE-ASME EIliptic failure theory B Le=500 mm dac 30 mm CAn=400 mm dan 20 mm 150 mm 200 mm +965 55842901 Fekry@kitechnology.org hnolegy
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