Considering the buckling failure modes of ship deck, a method of assessing the reliability of ship structure under slamming load was proposed. The random process model of deck failure function under the combining actions of slamming, wave-induced and Stillwater loads was set up based on the random process theory, considering the correlation of amplitudes of slamming and wave-induced loads. The reliability of the process was solved by up-crossing rate and parallel system reliability analysis method. The influences of damping, slamming rates and correlation coefficient of the loads on the reli?ability were analyzed through an example, the results indicate that the damping rate decides the influ?ence of slamming load on the reliability. The reliabilities of all primary failure modes were also calculat?ed, the results show that the stiffener tripping failure is the most dangerous. The method can provide theoretical foundation for evaluating the structural reliability of ship reasonably.
Key words
probability /
reliability analysis /
slamming load /
random process model /
up-crossing analy?sis method
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Footnotes
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