A ball bearing operates at 3000RPM, and has a life of 50,000 hours, 6500hours and 1000hours when subjected to constant amplitude loads of 1kN, 2kN and 4kN. During each hour of operation, the load is 4kN for 5min, 2kN for 15min and 1kN for 40min. Given this information, determine the total damage caused by this loading sequence on the ball bearing. Also, determine the life of the bearings in terms of hours. What percentage of the damage is caused by each of the loading individually?
A ball bearing operates at 3000RPM, and has a life of 50,000 hours, 6500hours and 1000hours when subjected to constant amplitude loads of 1kN, 2kN and 4kN. During each hour of operation, the load is 4kN for 5min, 2kN for 15min and 1kN for 40min. Given this information, determine the total damage caused by this loading sequence on the ball bearing. Also, determine the life of the bearings in terms of hours. What percentage of the damage is caused by each of the loading individually?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A ball bearing operates at 3000RPM, and has a life of 50,000 hours, 6500hours and 1000hours
when subjected to constant amplitude loads of 1kN, 2kN and 4kN. During each hour of operation,
the load is 4kN for 5min, 2kN for 15min and 1kN for 40min. Given this information, determine
the total damage caused by this loading sequence on the ball bearing. Also, determine the life of
the bearings in terms of hours. What percentage of the damage is caused by each of the loading
individually?
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