Hull/superstructure-interaction in optimized passenger ships

Heikki Remes; J. Romanoff; P. Varsta; H. Naar; A. Niemelä; J. Jelovica; A. Klanac; S. Bralic

Hull/superstructure-interaction in optimized passenger ships

Heikki Remes, J. Romanoff, P. Varsta, H. Naar, A. Niemelä, J. Jelovica, A. Klanac, S. Bralic

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

2 Citations (Scopus)

Abstract

The paper investigates the interaction between the hull and the superstructure in optimized passenger ships when exposed to bending loads. The investigation is done using the Coupled Beams theory which extends the basic beam theory to account vertical and shear stiffness between various decks. Optimization of passenger ship with respect to weight and Vertical Centre of Gravity (VCG) is carried out to create a set of Pareto-optimal solutions. The responses of these designs are compared in detail. The investigation shows that the vertical and shear coupling between different decks significantly affects the response of the passenger ships and changes load carrying mechanism of the hull girder. In the weight optimal design the vertical bending moment is shared equally by the hull and the superstructure, while in VCG optimal design the neutral axis approaches bottom plating of the ship considerably increasing the share of load carrying of the superstructure. This means that the global response evaluation needs to include vertical and shear coupling along whole length of the ship, and thus the simplified 2D section models are not adequate for the conceptual design of passenger ship structures.

Original language	English
Title of host publication	ADVANCES IN MARINE STRUCTURES
Subtitle of host publication	MARSTRUCT 2011, 3rd International Conference on Marine Structures, 28-30 March 2011, Hamburg, Germany
Place of Publication	Hamburg, Germany
Publisher	CRC Press
Pages	625-632
Number of pages	8
ISBN (Electronic)	978-0-415-67771-4
ISBN (Print)	978-0-203-80811-5
Publication status	Published - 14 Mar 2011
MoE publication type	A4 Conference publication
Event	International Conference on Marine Structures - Hamburg, Germany Duration: 28 Mar 2011 → 30 Mar 2011 Conference number: 3

Conference

Conference	International Conference on Marine Structures
Abbreviated title	MARSTRUCT
Country/Territory	Germany
City	Hamburg
Period	28/03/2011 → 30/03/2011

Cite this

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title = "Hull/superstructure-interaction in optimized passenger ships",

abstract = "The paper investigates the interaction between the hull and the superstructure in optimized passenger ships when exposed to bending loads. The investigation is done using the Coupled Beams theory which extends the basic beam theory to account vertical and shear stiffness between various decks. Optimization of passenger ship with respect to weight and Vertical Centre of Gravity (VCG) is carried out to create a set of Pareto-optimal solutions. The responses of these designs are compared in detail. The investigation shows that the vertical and shear coupling between different decks significantly affects the response of the passenger ships and changes load carrying mechanism of the hull girder. In the weight optimal design the vertical bending moment is shared equally by the hull and the superstructure, while in VCG optimal design the neutral axis approaches bottom plating of the ship considerably increasing the share of load carrying of the superstructure. This means that the global response evaluation needs to include vertical and shear coupling along whole length of the ship, and thus the simplified 2D section models are not adequate for the conceptual design of passenger ship structures.",

author = "Heikki Remes and J. Romanoff and P. Varsta and H. Naar and A. Niemel{\"a} and J. Jelovica and A. Klanac and S. Bralic",

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Remes, H , Romanoff, J , Varsta, P, Naar, H, Niemelä, A, Jelovica, J, Klanac, A & Bralic, S 2011, Hull/superstructure-interaction in optimized passenger ships. in ADVANCES IN MARINE STRUCTURES: MARSTRUCT 2011, 3rd International Conference on Marine Structures, 28-30 March 2011, Hamburg, Germany. CRC Press, Hamburg, Germany, pp. 625-632, International Conference on Marine Structures, Hamburg, Germany, 28/03/2011.

Hull/superstructure-interaction in optimized passenger ships. / Remes, Heikki ; Romanoff, J.; Varsta, P. et al.
ADVANCES IN MARINE STRUCTURES: MARSTRUCT 2011, 3rd International Conference on Marine Structures, 28-30 March 2011, Hamburg, Germany. Hamburg, Germany: CRC Press, 2011. p. 625-632.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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AU - Remes, Heikki

AU - Romanoff, J.

AU - Varsta, P.

AU - Naar, H.

AU - Niemelä, A.

AU - Jelovica, J.

AU - Klanac, A.

AU - Bralic, S.

N1 - Conference code: 3

PY - 2011/3/14

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N2 - The paper investigates the interaction between the hull and the superstructure in optimized passenger ships when exposed to bending loads. The investigation is done using the Coupled Beams theory which extends the basic beam theory to account vertical and shear stiffness between various decks. Optimization of passenger ship with respect to weight and Vertical Centre of Gravity (VCG) is carried out to create a set of Pareto-optimal solutions. The responses of these designs are compared in detail. The investigation shows that the vertical and shear coupling between different decks significantly affects the response of the passenger ships and changes load carrying mechanism of the hull girder. In the weight optimal design the vertical bending moment is shared equally by the hull and the superstructure, while in VCG optimal design the neutral axis approaches bottom plating of the ship considerably increasing the share of load carrying of the superstructure. This means that the global response evaluation needs to include vertical and shear coupling along whole length of the ship, and thus the simplified 2D section models are not adequate for the conceptual design of passenger ship structures.

AB - The paper investigates the interaction between the hull and the superstructure in optimized passenger ships when exposed to bending loads. The investigation is done using the Coupled Beams theory which extends the basic beam theory to account vertical and shear stiffness between various decks. Optimization of passenger ship with respect to weight and Vertical Centre of Gravity (VCG) is carried out to create a set of Pareto-optimal solutions. The responses of these designs are compared in detail. The investigation shows that the vertical and shear coupling between different decks significantly affects the response of the passenger ships and changes load carrying mechanism of the hull girder. In the weight optimal design the vertical bending moment is shared equally by the hull and the superstructure, while in VCG optimal design the neutral axis approaches bottom plating of the ship considerably increasing the share of load carrying of the superstructure. This means that the global response evaluation needs to include vertical and shear coupling along whole length of the ship, and thus the simplified 2D section models are not adequate for the conceptual design of passenger ship structures.

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CY - Hamburg, Germany

T2 - International Conference on Marine Structures

Y2 - 28 March 2011 through 30 March 2011

ER -

Hull/superstructure-interaction in optimized passenger ships

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