Naslov
Long-term prediction of combined wave and whipping bending moments of container ships

Autori
Ćorak, Maro ; Parunov, Joško ; Guedes Soares, Carlos

Izvornik
Ships and offshore structures (1744-5302) 10 (2015), 1; 4-19

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
container ship; whipping; bending moments; load combinations; operational and environmental uncertainties

Sažetak
The purpose of this paper is to propose a practical computational procedure for the long- term distribution of combined wave and whipping bending moments (BMs) of container ships. The problem is formulated in the frequency domain using standard engineering tools for load computation: a seakeeping code for the rigid- body response and a beam finite element model for transient vibratory response. The von Karman approach with correction for pile-up effect is employed for bow flare slamming load assessment. Correlation between wave and whipping BMs is considered. The procedure is demonstrated on the example of a 9200 TEU container ship. Long- term distributions of combined BMs are computed using the standard International Association of Classification Societies scatter diagram for the North Atlantic environment and two additional scatter diagrams for common shipping routes of container ships. The speed profile required for the long-term load prediction is calculated by the seakeeping analysis respecting operability limiting criteria. Conclusions about influence of various environmental and operability parameters are drawn.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja

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