Formulation of Three-Dimensional Green’s Function and its Application to Fatigue Life Evaluation of Pressurizer

Yoon Suk Chang; Shin Beom Choi; Jae Boong Choi; Young Jin Kim; Myung Jo Jhung; Young Hwan Choi

doi:10.4028/www.scientific.net/KEM.324-325.387

Paper Titles

Application of Fractional Spline Wavelet in Detection of Abrupt Information from Fault Gear System
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A Three-Dimensional Finite Element Model of Hydraulic Progressive Damage
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An Energy-Based Approach for Fatigue Crack Growth
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Modeling and Simulation of Hydraulic Fracturing Propagation in Permeable Reservoirs
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Formulation of Three-Dimensional Green’s Function and its Application to Fatigue Life Evaluation of Pressurizer
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Simulation Study on Impact Damage of Aircraft Panel Structure under Stress
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Study of Three-Dimensional Stress Distribution and Damage Characterization of Bolt Composite Joint
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Bifurcation and Chaos of the Rectangular Moderate Thickness Cracked Plates on an Elastic Foundation
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Analysis of Mixed Mode Cracks in Two-Dimensional Magnetoelectroelastic Media
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 324-325Formulation of Three-Dimensional Green’s Function...

Formulation of Three-Dimensional Green’s Function and its Application to Fatigue Life Evaluation of Pressurizer

Abstract:

Major nuclear components have been designed by conservative codes to prevent unanticipated fatigue failure. However, more realistic and effective assessment is necessary in proof of continued operation beyond the design life. In the present paper, three-dimensional stress and fatigue evaluation is carried out for pressurizer employing complex full geometry itself instead of conventional discrete subcomponents. For this purpose, temperature and mechanical stress transfer Green’s functions are derived from finite element analyses and applied to critical locations of pressurizer. In accordance with comparison of resulting stresses obtained from the Green’s function and detailed finite element analysis, suitability of the specific Green’s function is investigated. Finally, prototype of fatigue life assessment results is provided along with relevant ongoing activities.

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Periodical:

Key Engineering Materials (Volumes 324-325)

Pages:

387-390

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.324-325.387

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Online since:

November 2006

Authors:

Yoon Suk Chang, Shin Beom Choi, Jae Boong Choi, Young Jin Kim, Myung Jo Jhung, Young Hwan Choi

Keywords:

Duhamel's Theorem, Fatigue Monitoring System, Finite Element Analysis (FEA), Green's Function, Nuclear Power Plant (NPP), Pressurizer

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