Shape characterization and impact on the structural behavior of initially distorted, 4-mm thick ship-deck stiffened panels

Federica Mancini; Heikki Remes; Jani Romanoff; Pauli Lehto; Matti Rautiainen; Abinab Niraula; Ari Niemelä

doi:10.1201/9781003399759-70

Shape characterization and impact on the structural behavior of initially distorted, 4-mm thick ship-deck stiffened panels

Federica Mancini, Heikki Remes, Jani Romanoff, Pauli Lehto, Matti Rautiainen, Abinab Niraula, Ari Niemelä

Meyer Turku Oy

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

Abstract

The shipbuilding industry aims at innovative design solutions for high-performing, lightweight structures. In cruise ship superstructures this translates, for example, into the design of thin-walled decks. Due to welding-induced, curved distortions, the fatigue life assessment of these structures cannot be based on the current fatigue design recommendations, which assume flat distortions. In this regard, this study investigates the panel plate field distortion shape and the stress concentration in the proximity of the weld by experiments and Geometrically Nonlinear Finite Element Analysis (GNL-FEA). Distortions are measured on 4-mm thick ship-deck panels, which are exposed to monotonic tensile test. The shape characterization considers the effect of structural continuity and boundary conditions, i.e., the cutting from the ship block and clamping of the panels in the test set-up. The numerical analysis highlights significant nonlinear secondary bending caused by curved distortions, despite acceptable misalignment amplitudes as defined in the current shipbuilding design standards.

Original language	English
Title of host publication	Advances in the analysis and design of marine structures
Subtitle of host publication	Proceedings of the 9th International Conference on Marine Structures (MARSTRUCT 2023, Gothenburg, Sweden, 3-5 April 2023)
Editors	J. W. Ringsberg, C. Guedes Soares
Publisher	CRC Press
Pages	629-637
Number of pages	9
ISBN (Electronic)	978-1-003-39975-9
ISBN (Print)	978-1-032-50636-4 , 978-1-032-50810-8
DOIs	https://doi.org/10.1201/9781003399759-70
Publication status	Published - 14 Apr 2023
MoE publication type	A4 Conference publication
Event	International Conference on Marine Structures - Gothenburg, Sweden Duration: 3 Apr 2023 → 5 Apr 2023 Conference number: 9

Publication series

Name	Proceedings in Marine Technology and Ocean Engineering
Volume	11
ISSN (Print)	2638-647X
ISSN (Electronic)	2638-6461

Conference

Conference	International Conference on Marine Structures
Abbreviated title	MARSTRUCT
Country/Territory	Sweden
City	Gothenburg
Period	03/04/2023 → 05/04/2023

Access to Document

10.1201/9781003399759-70

1 Finished
1 Active

CaNeLis: Carbon-neutral lightweight ship structures using advanced design, production, and life-cycle services
Remes, H., Heiskari, J., Lehto, P., Romanoff, J., Mancini, F., Ono, Y., Niraula, A., Karola, A., Asplund, A., Matusiak, J., Mikkola, T., Tariq, S., Christmann, M. & Zaka, A.
01/10/2022 → 30/09/2025
Project: Business Finland: Strategic centres for science, technology and innovation (SHOK)
RAMSSES: Realisation and Demonstration of Advanced Material Solutions for Sustainable and Efficient Ships
Remes, H.
01/06/2017 → 30/11/2021
Project: EU: Framework programmes funding

Solid Mechanics Laboratory (i3)
Pauli Lehto (Manager)
Department of Mechanical Engineering
Facility/equipment: Facility

Cite this

Mancini, F., Remes, H., Romanoff, J., Lehto, P., Rautiainen, M., Niraula, A., & Niemelä, A. (2023). Shape characterization and impact on the structural behavior of initially distorted, 4-mm thick ship-deck stiffened panels. In J. W. Ringsberg, & C. Guedes Soares (Eds.), Advances in the analysis and design of marine structures: Proceedings of the 9th International Conference on Marine Structures (MARSTRUCT 2023, Gothenburg, Sweden, 3-5 April 2023) (pp. 629-637). (Proceedings in Marine Technology and Ocean Engineering; Vol. 11). CRC Press. https://doi.org/10.1201/9781003399759-70

Mancini, Federica ; Remes, Heikki ; Romanoff, Jani et al. / Shape characterization and impact on the structural behavior of initially distorted, 4-mm thick ship-deck stiffened panels. Advances in the analysis and design of marine structures: Proceedings of the 9th International Conference on Marine Structures (MARSTRUCT 2023, Gothenburg, Sweden, 3-5 April 2023) . editor / J. W. Ringsberg ; C. Guedes Soares. CRC Press, 2023. pp. 629-637 (Proceedings in Marine Technology and Ocean Engineering).

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title = "Shape characterization and impact on the structural behavior of initially distorted, 4-mm thick ship-deck stiffened panels",

abstract = "The shipbuilding industry aims at innovative design solutions for high-performing, lightweight structures. In cruise ship superstructures this translates, for example, into the design of thin-walled decks. Due to welding-induced, curved distortions, the fatigue life assessment of these structures cannot be based on the current fatigue design recommendations, which assume flat distortions. In this regard, this study investigates the panel plate field distortion shape and the stress concentration in the proximity of the weld by experiments and Geometrically Nonlinear Finite Element Analysis (GNL-FEA). Distortions are measured on 4-mm thick ship-deck panels, which are exposed to monotonic tensile test. The shape characterization considers the effect of structural continuity and boundary conditions, i.e., the cutting from the ship block and clamping of the panels in the test set-up. The numerical analysis highlights significant nonlinear secondary bending caused by curved distortions, despite acceptable misalignment amplitudes as defined in the current shipbuilding design standards.",

author = "Federica Mancini and Heikki Remes and Jani Romanoff and Pauli Lehto and Matti Rautiainen and Abinab Niraula and Ari Niemel{\"a}",

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Mancini, F , Remes, H , Romanoff, J , Lehto, P , Rautiainen, M , Niraula, A & Niemelä, A 2023, Shape characterization and impact on the structural behavior of initially distorted, 4-mm thick ship-deck stiffened panels. in JW Ringsberg & C Guedes Soares (eds), Advances in the analysis and design of marine structures: Proceedings of the 9th International Conference on Marine Structures (MARSTRUCT 2023, Gothenburg, Sweden, 3-5 April 2023) . Proceedings in Marine Technology and Ocean Engineering, vol. 11, CRC Press, pp. 629-637, International Conference on Marine Structures, Gothenburg, Sweden, 03/04/2023. https://doi.org/10.1201/9781003399759-70

Shape characterization and impact on the structural behavior of initially distorted, 4-mm thick ship-deck stiffened panels. / Mancini, Federica ; Remes, Heikki ; Romanoff, Jani et al.
Advances in the analysis and design of marine structures: Proceedings of the 9th International Conference on Marine Structures (MARSTRUCT 2023, Gothenburg, Sweden, 3-5 April 2023) . ed. / J. W. Ringsberg; C. Guedes Soares. CRC Press, 2023. p. 629-637 (Proceedings in Marine Technology and Ocean Engineering; Vol. 11).

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

TY - GEN

T1 - Shape characterization and impact on the structural behavior of initially distorted, 4-mm thick ship-deck stiffened panels

AU - Mancini, Federica

AU - Remes, Heikki

AU - Romanoff, Jani

AU - Lehto, Pauli

AU - Rautiainen, Matti

AU - Niraula, Abinab

AU - Niemelä, Ari

N1 - Conference code: 9

PY - 2023/4/14

Y1 - 2023/4/14

N2 - The shipbuilding industry aims at innovative design solutions for high-performing, lightweight structures. In cruise ship superstructures this translates, for example, into the design of thin-walled decks. Due to welding-induced, curved distortions, the fatigue life assessment of these structures cannot be based on the current fatigue design recommendations, which assume flat distortions. In this regard, this study investigates the panel plate field distortion shape and the stress concentration in the proximity of the weld by experiments and Geometrically Nonlinear Finite Element Analysis (GNL-FEA). Distortions are measured on 4-mm thick ship-deck panels, which are exposed to monotonic tensile test. The shape characterization considers the effect of structural continuity and boundary conditions, i.e., the cutting from the ship block and clamping of the panels in the test set-up. The numerical analysis highlights significant nonlinear secondary bending caused by curved distortions, despite acceptable misalignment amplitudes as defined in the current shipbuilding design standards.

AB - The shipbuilding industry aims at innovative design solutions for high-performing, lightweight structures. In cruise ship superstructures this translates, for example, into the design of thin-walled decks. Due to welding-induced, curved distortions, the fatigue life assessment of these structures cannot be based on the current fatigue design recommendations, which assume flat distortions. In this regard, this study investigates the panel plate field distortion shape and the stress concentration in the proximity of the weld by experiments and Geometrically Nonlinear Finite Element Analysis (GNL-FEA). Distortions are measured on 4-mm thick ship-deck panels, which are exposed to monotonic tensile test. The shape characterization considers the effect of structural continuity and boundary conditions, i.e., the cutting from the ship block and clamping of the panels in the test set-up. The numerical analysis highlights significant nonlinear secondary bending caused by curved distortions, despite acceptable misalignment amplitudes as defined in the current shipbuilding design standards.

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SN - 978-1-032-50636-4

SN - 978-1-032-50810-8

T3 - Proceedings in Marine Technology and Ocean Engineering

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BT - Advances in the analysis and design of marine structures

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ER -

Mancini F , Remes H , Romanoff J , Lehto P , Rautiainen M , Niraula A et al. Shape characterization and impact on the structural behavior of initially distorted, 4-mm thick ship-deck stiffened panels. In Ringsberg JW, Guedes Soares C, editors, Advances in the analysis and design of marine structures: Proceedings of the 9th International Conference on Marine Structures (MARSTRUCT 2023, Gothenburg, Sweden, 3-5 April 2023) . CRC Press. 2023. p. 629-637. (Proceedings in Marine Technology and Ocean Engineering). doi: 10.1201/9781003399759-70

Shape characterization and impact on the structural behavior of initially distorted, 4-mm thick ship-deck stiffened panels

Abstract

Publication series

Conference

Access to Document

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Projects

CaNeLis: Carbon-neutral lightweight ship structures using advanced design, production, and life-cycle services

RAMSSES: Realisation and Demonstration of Advanced Material Solutions for Sustainable and Efficient Ships

Equipment

Solid Mechanics Laboratory (i3)

Cite this