A 1,394-lb force is applied to a rotating tool steel bar at a frequency of 3000 cycles/minute. The bar is is 12.00 in. long. The fatigue curve for the steel used in the bar is shown below. Calculate the diameter of the shaft that would be needed to prevent fatigue failure from ever occurring. Use ±σ=32FLπd3 and report your units in inches.
A 1,394-lb force is applied to a rotating tool steel bar at a frequency of 3000 cycles/minute. The bar is is 12.00 in. long. The fatigue curve for the steel used in the bar is shown below. Calculate the diameter of the shaft that would be needed to prevent fatigue failure from ever occurring. Use ±σ=32FLπd3 and report your units in inches.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A 1,394-lb force is applied to a rotating tool steel bar at a frequency of 3000 cycles/minute. The bar is is 12.00 in. long. The fatigue curve for the steel used in the bar is shown below. Calculate the diameter of the shaft that would be needed to prevent fatigue failure from ever occurring. Use ±σ=32FLπd3 and report your units in inches.
Transcribed Image Text:Applied Stress (ksi)
120
110
100
90
80
70
60
50
40
30
20
10
0
1.00E+04
1.00E+05
1.00E+06
Number of cycles
1.00E+07
1.00E+08
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