지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.6
- 수록면
- 222 - 235 (14page)
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초록· 키워드
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The purpose of this study is to suggest guidelines for riser fatigue analysis in terms of selection of reasonable analysis method. Three analysis methods (spectral, regular wave, rain-flow counting) are introduced and compared. As the riser systems give non-linear response, the time-domain analysis method is more preferred than frequency-domain analysis method. The spectral fatigue analysis method, however, is still useful for identifying fatigue prone areas. Once stress RAO is established, fatigue damage can be calculated very quickly. The regular wave method and the rain-flow counting method are more time consuming but give more exact results compare to spectral method. In case of regular wave method, a set of regular waves which represent random sea states is considered for dynamic analysis. The rain-flow counting method is the most intuitive and exact method because it refers time history stresses containing most of non-linear effects of the riser system. However, it is not common for early design stage to use rain-flow counting method because of its high cost. In this study, it was confirmed that the regular wave method is the most cost effective way in specific cases. However, if the system is highly non-linear, it seems that the regular wave method gives less accurate results than rain-flow counting method. Therefore, it is imperative that the engineers select appropriate analysis method based on design stage and given engineering period. This paper also discusses the theoretical background of each calculation method and hydrodynamic aspects of marine riser systems. A steel catenary riser (SCR) line on FPSO was considered and marine dynamic program (OrcaFlex) was used for static and dynamic analysis.
목차
1. 서론
2. 해석 모델 및 해상상태
3. 정적 및 동적 해석
4. 라이저 피로손상 평가 방법
5. 등가 해상상태 정의
6. 해석 결과
7. 결론
References
참고문헌 (15)
참고문헌 신청
[단행본] - Almar-Naess / 1985 / Fatigue Handbook Offshore Steel Structure / Tapir Publishers
[보고서] - API, Recommended Practice 2RD / 2006 / Design of Risers for Floating Production Systems (FPSs) and Tension-Leg Platform(TLPS)
[학술지(정기간행물)] - Braccesi, C. / 2005 / Fatigue Behavior Analysis of Mechanical Components Subject to Random Bimodal Stress Process / International Journal of Fatigue 27 : 335 ~ 345
[인터넷자원] - Campbell, M. / / The complexities of fatigue analysis for deepwater risers
[단행본] - Chakrabarti, S. K. / 1987 / Hydrodynamics of Offshore Structures / Computational Mechanics Publications Southhampton
[보고서] - API, Recommended Practice 2RD / 2006 / Design of Risers for Floating Production Systems (FPSs) and Tension-Leg Platform(TLPS)
[학술지(정기간행물)] - Braccesi, C. / 2005 / Fatigue Behavior Analysis of Mechanical Components Subject to Random Bimodal Stress Process / International Journal of Fatigue 27 : 335 ~ 345
[인터넷자원] - Campbell, M. / / The complexities of fatigue analysis for deepwater risers
[단행본] - Chakrabarti, S. K. / 1987 / Hydrodynamics of Offshore Structures / Computational Mechanics Publications Southhampton
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UCI(KEPA) : I410-ECN-0101-2016-559-001528342