engleski

Short-term probabilistic combination of wave and whipping bending moments

Extreme values of wave and whipping loads are determined by different calculation procedures in the preliminary design stage. The extreme values do not occur at the same time instant so probabilistic load combination methods should be used for determination of the maximum combined bending moment. A corre-lation analysis between wave and whipping bending moments is performed and a practical method for calcu-lation of the most-probable short-term load combination factor between considered bending moments is pre-sented. The method is based on the reconstruction of the time signal from the frequency domain. The calculated short-term load combination factors are included in the short-term probability density function of the combined bending moment. Since large container ships can experience a significant whipping response, the method is demonstrated on the example of a 4400 TEU container ship.

container ship ; whipping bending moments ; wave bending moments ; short-term load combination factor

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