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논문 기본 정보

자료유형
학술대회자료
저자정보
Collins Owino JUMA (KINGS) Ihn NAMGUNG (KEPCO International Nuclear Graduate School)
저널정보
대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2018년도 학술대회
발행연도
2018.12
수록면
1,381 - 1,386 (6page)

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Perforated plates are used for the steam generator tube sheet and the Reactor Vessel Closure Head in the Nuclear Power Plant. The structural integrity of these perforated structures is vital to the operation and safety of the Nuclear Power plant. ASME code addresses the analysis of perforated plates in Section III, Appendix A-8000, with triangular perforation pattern. This paper investigates the equivalent material properties by FEM methodology. Simulation of both thin and thick perforated plates and try to re-assess ASME Section III Appendix A-8000 curve. The isotropic material properties of the perforated plate were replaced with anisotropic material properties of the equivalent solid plate and subjected to same loading and boundary conditions. The difference between the deformation of the perforated and equivalent solid plate was optimized for convergence by varying the effective elastic constants. Curves of the effective elastic constants vs ligament efficiency were generated. The equivalent material property curves obtained using FEM methodology were in good agreement with the design curve provided in ASME Section. III Appendix A-8000.

목차

Abstract
1. Introduction
2. Equivalent properties for the flat perforated plate
3. Methodology.
4. Results.
5. Conclusion and Discussion.
References.

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