지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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The fatigue damages in structural details of offshore plants can be accumulated due to various environmental loadings such as swell, wave, wind and current. It is known that load histories acting on mooring and riser systems show stationary and ergodic bimodal wide-banded process. This paper provides refined approach to obtain time signals representing stress range histories from wide-banded bimodal spectrum which consists of ideally narrow-banded and fully separated two spectrums. Variations of the probabilistic characteristics for time signals according to frequency and sampling time increments are compared with the reference data to be the probabilistic characteristics such as zero-crossing period, peak period, and irregularity factor obtained from an assumed ideal spectrum. It is proved that the sampling time increment more affects on the probabilistic characteristics than frequency increment. The fatigue damages according to the frequency and sampling time increments are also compared with the ones with minimum increment condition which are thought to be exact fatigue damage. It is concluded that the maximum sampling time increment to obtain reliable time signals should be determined that ratio of applied maximum sampling time increment and minimum period is less than approximately 0.08.
목차
ABSTRACT
1. 서론
2. 동적 응답의 확률 특성
3. 사례 연구
4. 결론
참고문헌
참고문헌 (10)
참고문헌 신청
1. [단행본] - API - American Petroleum Institute / 2005 / Design and Analysis of Stationkeeping Systems for Floating Structures / RP- 2SK
2. [학술지(정기간행물)] - Benasciutti, D / 2005 / Spectral Methods for Lifetime Prediction under Wide-Band Stationary Random Processes / International Journal of Fatigue 27 (8) : 867 ~ 877
4. [학위논문] - Dirlik, T / 1985 / Application of Computers in Fatigue Analysis / PhD / University of Warwick
5. [단행본] - Hino, M / 2000 / Spectrum Analysis / Sciencebook Press
7. [단행본] - Matsuishi, M / 1968 / Fatigue of Metals Subjected to Varying Stress / Japan Society of Mechanical Engineers
2. [학술지(정기간행물)] - Benasciutti, D / 2005 / Spectral Methods for Lifetime Prediction under Wide-Band Stationary Random Processes / International Journal of Fatigue 27 (8) : 867 ~ 877
4. [학위논문] - Dirlik, T / 1985 / Application of Computers in Fatigue Analysis / PhD / University of Warwick
5. [단행본] - Hino, M / 2000 / Spectrum Analysis / Sciencebook Press
7. [단행본] - Matsuishi, M / 1968 / Fatigue of Metals Subjected to Varying Stress / Japan Society of Mechanical Engineers
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UCI(KEPA) : I410-ECN-0101-2012-559-004502431