Abstract:
Fatigue failure
of mechanical part is treated as a random event. The fatigue
reliability problem can be solved through researching the
random event. A new definition δ that measures fatigue damage
quantity in a cycle under cyclic stress is put forward.
According to δ, the paper presents two new definitions K and D
is fatigue damage strength. D is overall fatigue damage
quantity. Using K and D to describe the fatigue failure of the
parts, the paper puts forward a new fatigue cumulative damage
probabilistic model of the mechanical parts. The model can be
used to solve reliability fatigue problem.
Key words:
Fatigue damage Fatigue failure Reliability Fatigue cumulative damage probabilistic model
Manuscript received on
November 10, 1993; revised manuscript January 15, 1994
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