A steel plate is loaded as shown below with a force F, which fluctuates with the...

A steel plate is loaded as shown below with a force F, which fluctuates with the following load pattern for 12 seconds

Load 1: 10 cycles at -3,000 lbf to 3,000 lbf

Load 2: 10 cycles from -2,000 lbf to 8,000 lbf

Load 3: 5 cycles at -8,000 lbf to 8,000 lbf.

Point A is located at the fillet radius. The fillet radii at all points is r = 0.175 in. The fatigue strength fraction is f = 0.80, the fully adjusted endurance limit has been determined to be 30 ksi, the ultimate strength is 160 ksi, and the yield strength is 105 ksi. The notch sensitivity factor q is 0.9. Assume there is no plastic localized strain at point A.

Determine the life of the component at point A in hours if this 12 seconds pattern repeats for the remainder of the part's life.

Expert Solution

samet mamat answered 5 months ago

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