Direct calculation of buckling and fatigue strength of large Ro-Ro ship section

Abstract

[Objectives] A Roll-on/Roll-off(Ro-Ro)ship is a modern ship type with high technology and high added value. Due to the specification of its structure,a consensus on buckling and fatigue checking for Ro-Ro ships has not been reached among the different classification societies of the world. [Methods] On the basis of analyzing the structural characteristics of Ro-Ro ships,the present study considers the direct calculation of buckling strength,advanced buckling analysis and fatigue analysis of a selected section of a large Ro-Ro ship. The calculations are conducted on the basis of self-developed software from the SJTU KSHIP Project. The pretreatment of buckling and fatigue assessment are established in accordance with the DNV standard "Strength Analysis of Hull Structure of Roll-on/Roll-off Ships and Car Carriers",and the related CCS rules. [Results] The calculated buckling strength, advanced buckling strength and fatigue strength of the target cabin meet the requirements of the related rules.[Conclusions] The contents of this paper have a certain reference value for the related structural analysis of Ro-Ro ships.

Keywords

• Ro-Ro passenger ship
• buckling strength
• advanced buckling analysis
• fatigue strength
• FEA