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FATIGUE DESIGN OF WELDS BASED ON STRUCTURAL STRESS IN ASME Ⅷ-2

作者:Kenny Shen ⁄ 时间:2015年01月02日 ⁄ 分类: 论文 评论:0

ABSTRACT: The general fatigue design methods of welds for pressure vessel are based on nominal stress or extrapolation-based hot spot stress. These two methods have some limitations to obtain the accurate fatigue assessment for welds. After ASME Ⅷ-2(2007)was issued, a new alternative method based on equilibrium-equivalent structural stress is available. The purpose of this paper is to introduce and discuss specialties and advantages of this advanced method from three aspects: conceptions and principles, fatigue design curve and engineering implementation.


KEY WORD: structural stress method, fatigue design, finite element method 


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