Q-2 The rotating shaft running at n= 900 rpm, shown in the figure below, is machined from AISI 1045 CD steel. It is subjected to a force of F = 10.1 kN. The shaft is experiencing an operating temperature of 35 °C. With the specified loading and for a reliability of 99.9 %, a) Determine the minimum factor of safety for fatigue based on infinite life*. b) Determine the maximum safe load (Fmax) that can be applied for a factor of safety of 1.5 and a design life of 5x10° cycles, all other input values remaining the same. c) Determine factor of safety against yielding. 500 F 175- 25 D. 35 D. 3 R. 50 D. -25 D. В +20 20 20 -180 280- 20 (Dimensions in mm.)
Q-2 The rotating shaft running at n= 900 rpm, shown in the figure below, is machined from AISI 1045 CD steel. It is subjected to a force of F = 10.1 kN. The shaft is experiencing an operating temperature of 35 °C. With the specified loading and for a reliability of 99.9 %, a) Determine the minimum factor of safety for fatigue based on infinite life*. b) Determine the maximum safe load (Fmax) that can be applied for a factor of safety of 1.5 and a design life of 5x10° cycles, all other input values remaining the same. c) Determine factor of safety against yielding. 500 F 175- 25 D. 35 D. 3 R. 50 D. -25 D. В +20 20 20 -180 280- 20 (Dimensions in mm.)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The rotating shaft running at n = 900 rpm, shown in the figure below, is machined from AISI 1045 CD steel. It is subjected to a force of F = 10.1 kN. The shaft is experiencing an operating temperature of 35 oC. With the specified loading and for the reliability of 99.9 %,
- Determine the minimum factor of safety for fatigue based on infinite life*.
- Determine the maximum safe load (Fmax) that can be applied for a factor of safety of 1.5 and a design life of 5x105 cycles, all other input values remaining the same.
- Determine the factor of safety against yielding.
Transcribed Image Text:Q-2
AISI 1045 CD steel. It is subjected to a force of F = 10.1 kN. The shaft is experiencing an
operating temperature of 35 °C. With the specified loading and for a reliability of 99.9 %,
a) Determine the minimum factor of safety for fatigue based on infinite life*.
b) Determine the maximum safe load (Fmax) that can be applied for a factor of safety of 1.5
and a design life of 5x10$ cycles, all other input values remaining the same.
c) Determine factor of safety against yielding.
The rotating shaft running at n =
900
rpm, shown in the figure below, is machined from
500
-175-
25 D.
- 35 D.
3 R.
-50 D.
-25 D.
A
B
DA
20
- 20
20
-180
280-
-20
(Dimensions in mm.)
*Free-body, shear-force and bending moment diagrams are required.
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