| Simulation and Analysis of a Gravity Cyh'nder's Stability in Short-Crested Sea |
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| 作者单位： | Yu Ke and Su Weidong Postgraduate，River and Harbour Department，Nanjing Hydraulic ResearchInstitute，Nanjing Engineer，River and Harbour Department，Nanjing Hydraulic Research Institute，Nanjing |
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| 摘 要： | Generally, the reliability of ami -sliding and anti-overturning stability of an isolated gravity cylinder in a certain working period can be evaluated only when the statistical properties of short term stability are given first. The authors used numerical method to simulate the stability state function of a cylinder in short-crested sea, and further to get the probabilitical characteristics of the structure's stability by time domain analysis. The external loads appeared in the state functions include horizontal wave force, lift force and the respective moments, and the loads are correlated by co- spectrum. The numerical method presented in this paper can be used not only to solve short term reliability problem directly, but to calculate and analyse the long term reliability problem as well. For circular cylinders, an example of simulation and analysis is displayed in this paper.
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Simulation and Analysis of a Gravity Cyh'nder's Stability in Short-Crested Sea |
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| Authors: | Yu Ke and Su Weidong Postgraduate River and Harbour |
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| Abstract: | Generally, the reliability of ami -sliding and anti-overturning stability of an isolated gravity cylinder in a certain working period can be evaluated only when the statistical properties of short term stability are given first. The authors used numerical method to simulate the stability state function of a cylinder in short-crested sea, and further to get the probabilitical characteristics of the structure's stability by time domain analysis. The external loads appeared in the state functions include horizontal wave force, lift force and the respective moments, and the loads are correlated by co- spectrum. The numerical method presented in this paper can be used not only to solve short term reliability problem directly, but to calculate and analyse the long term reliability problem as well. For circular cylinders, an example of simulation and analysis is displayed in this paper. |
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| Keywords: | numerical method structure stability wave force probability gravity cylinder |
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