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3-Dimensional Stress Analysis for Creep Life Assessment of Y-Piece Under Inner Pressure  

Shin, Kyu-In (Frontier Technology Innovation Center, Chung Ang University)
Lee, Jin-Sang (Department of Mechanical Engineering, Chung Ang University)
Yoon, Kee-Bong (Department of Mechanical Engineering, Chung Ang University)
Publication Information
Journal of the Korean Society of Safety / v.22, no.2, 2007 , pp. 22-27 More about this Journal
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.
Keywords
elastic-creep analysis; remaining life assessment; stress relaxation; Y-pipe;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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