| Fatigue Crack Propagation in Steel A131 Under Ice Loading of Crushing,Bending and Buckling |
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| 引用本文： | 段梦兰,樊晓东,宋立崧,方华灿,James C. M. LI. Fatigue Crack Propagation in Steel A131 Under Ice Loading of Crushing,Bending and Buckling[J]. 中国海洋工程, 2001, 0(3): 315-328 |
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| 作者姓名： | 段梦兰 樊晓东 宋立崧 方华灿 James C. M. LI |
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| 作者单位： | R. & D. Center，China Classification Society，Shanghai Offshore Petroleum Bureau，China National Offshore Oil Co.，University of Petroleum，University of Rochester，Rochester Beijing 100006，China，Shanghai 200120，China，Beijing 100027，China，Beijing 102200，China，NY 14623，USA |
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| 摘 要： | Three types of ice loading, which are most commonly present when ice acts on structures, are chosen and simulated for use of fatigue crack propagation tests on offshore structural steel A131. The three types of ice categorized in accordance with the failure modes when acting on structures called crushing ice, bending ice, and buckling ice, respectively. This paper presents an experimental investigation on the fatigue crack propagation behavior of widely used high strength steel A131 for offshore jackets in the loading environment of ice crushing, bending, and buckling. The test results of fatigue crack propagation in steel A131 under these simulated ice loading at temperature 292K. are presented and analyzed in detail in this paper. The amplitude root mean square stress intensity factor is optimized to be the fundamental parameter of fatigue crack propagation for all types of ice loading histories. The results are also compared with constant amplitude fatigue crack propagation conclusions as in wave loa
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Fatigue Crack Propagation in Steel A131 Under Ice Loading of Crushing, Bending and Buckling |
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| DUAN Menglan(. Fatigue Crack Propagation in Steel A131 Under Ice Loading of Crushing, Bending and Buckling[J]. China Ocean Engineering, 2001, 0(3): 315-328 |
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| Authors: | DUAN Menglan( |
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| Abstract: | Three types of ice loading, which are most commonly present when ice acts on structures, are chosen and simulated for use of fatigue crack propagation tests on offshore structural steel A131. The three types of ice categorized in accordance with the failure modes when acting on structures called crushing ice, bending ice, and buckling ice, respectively. This paper presents an experimental investigation on the fatigue crack propagation behavior of widely used high strength steel A131 for offshore jackets in the loading environment of ice crushing, bending, and buckling. The test results of fatigue crack propagation in steel A131 under these simulated ice loading at temperature 292K. are presented and analyzed in detail in this paper. The amplitude root mean square stress intensity factor is optimized to be the fundamental parameter of fatigue crack propagation for all types of ice loading histories. The results are also compared with constant amplitude fatigue crack propagation conclusions as in wave load mode, and a joint investigation on the results from ice forces, ice-induced vibrations, and ice-induced fatigue crack propagation is conducted. Conclusions are drawn for reference in structural design and material selection for offshore structures in ice environments. |
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| Keywords: | fatigue crack crack growth rale stress intensity factor ice loading temperature steel A1 31 test |
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