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내압을 받는 Y 배관의 크리프 수명 평가를 위한 3차원 응력해석3-Dimensional Stress Analysis for Creep Life Assessment of Y-Piece Under Inner Pressure
- Issue Date
- 2007
- Publisher
- 한국안전학회
- Keywords
- combination crack; longitudinal crack; circumferential crack; burst pressure; crack opening angle(COA); elastic plastic analysis
- Citation
- 한국안전학회지, v.22, no.2, pp 22 - 27
- Pages
- 6
- Journal Title
- 한국안전학회지
- Volume
- 22
- Number
- 2
- Start Page
- 22
- End Page
- 27
- ISSN
- 1738-3803
- Abstract
- To assess a creep life of elevated temperature plant components, inspections and analysis are usually focused on the critical locations. In this study, stress analysis of a weld region in branch part of Y-piece was conducted by using a three-dimensional finite element analysis. The stresses at the inner and outer surface in the weld part were estimated by using elastic and elastic-creep analysis. For the elastic-creep analysis two kinds of elastic-creep analysis was conducted. The one was assumed that base and weld material properties were same and the other was that material properties were different between base and weld metal. The material properties of base and weld metal were used from reference data. The results showed the stress relaxation level and its location. The result stresses are also compared with elastic stresses.
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Collections - College of Engineering > School of Mechanical Engineering > 1. Journal Articles
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