Abstract: In reliability design of
fatigue under random loading, the influence of loading sequence
must be considered. In order to avoid the uncertain hypothesis
in the Miner's rule, ie. that the sum of damage equals one
represents failure, this paper proposes the probabilistic
relative Miner's rule. This paper also presents a new method for
calculating reliability, ie. the synthetic method of Miner's rule
and interference model. This model considers not only the
influence of stress concentration, dimension and surface, but
also the influence of stress amplitude and sequence.
Key words:
Fatigue reliability Stress-strength
interference model Relative Miner's rule
* This project is supported by National Natural Science Foundation of
China. Manuscript received on March 1, 1994
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