On design cycles counting in regulatory fatigue strength estimation

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作者：
Russia Minatom Engineering Cent of, Nuclear Equipment Strength,, Reliability and Lifetime, Moscow, Russia [1 ]
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来源：
Nucl Eng Des | / 1卷 / 101-107期
关键词：
Algorithms - Calculations - Estimation - Fatigue of materials - Nuclear engineering - Strength of materials;
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摘要：
A problem of design-based cycles counting for fatigue assessments of structures without initial cracks is considered in terms of requirements of strength analysis regulations for nuclear engineering components according to crack nucleation criterion. It is shown that a higher conservatism of these requirements for design stage analysis does not permit to apply the widely distributed rain-flow method. An alternative algorithm of cycles counting is presented. It satisfies the regulations requirements and is easy to realize in design practice.
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