Azimuthing propulsor rule development for Finnish-Swedish ice class rules

Ilkka Perälä; Aki Kinnunen; Lauri Kuuliala

Azimuthing propulsor rule development for Finnish-Swedish ice class rules

Ilkka Perälä, Aki Kinnunen, Lauri Kuuliala

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

Abstract

With increasing number of azimuthing propulsor installed on ships, azimuthing propulsor ice class rule development for Finnish-Swedish ice class rules (FSICR) started in 2010. In the beginning of the development project, suitable load scenarios for azimuthing propulsors were identified and applicable ice load calculation methods were reviewed. The two main load scenarios for the propulsors were considered to be impact to floating ice block and penetration to ice ridge. The impact load scenario drove the development of a new dynamic impact load model for Azimuthing units. This impact model was tested against small-scale con-trolled tests on sea ice and also validated with selected full-scale measurements. The ice ridge interaction load scenario was studied with state of the art FE-model of ice ridge and ship interaction. The scientific approaches yielded solid physical background for formulating simplified load estimation formulas for the load scenarios. In addition to the main load scenarios, also impact load distributions were investigated.
The whole project lasted from 2010 to 2016, and it had a steering group consisting of classification societies as well as azimuthing propulsor manufacturers. The work was reviewed and guided with the experts in the steering group. The results of the work are being included as a part of new version of Finnish-Swedish ice class rules.

Original language	English
Title of host publication	Marine Design XIII, Volume 2
Subtitle of host publication	Proceedings of the 13th International Marine Design Conference (IMDC 2018), June 10-14, 2018, Helsinki, Finland
Editors	Pentti Kujala, Liangliang Lu
Publisher	CRC Press
Chapter	Arctic Design
Pages	777-782
Number of pages	6
Volume	2
ISBN (Print)	9781138340763
Publication status	Published - 11 Jun 2018
MoE publication type	Not Eligible
Event	13th International Marine Design Conference, IMDC 2018 - Helsinki, Finland Duration: 10 Jun 2018 → 14 Jun 2018 Conference number: 13

Conference

Conference	13th International Marine Design Conference, IMDC 2018
Abbreviated title	IMDC 2018
Country	Finland
City	Helsinki
Period	10/06/18 → 14/06/18

Keywords

FSICR
azimuthing propulsion
ice impact
ice class

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title = "Azimuthing propulsor rule development for Finnish-Swedish ice class rules",

abstract = "With increasing number of azimuthing propulsor installed on ships, azimuthing propulsor ice class rule development for Finnish-Swedish ice class rules (FSICR) started in 2010. In the beginning of the development project, suitable load scenarios for azimuthing propulsors were identified and applicable ice load calculation methods were reviewed. The two main load scenarios for the propulsors were considered to be impact to floating ice block and penetration to ice ridge. The impact load scenario drove the development of a new dynamic impact load model for Azimuthing units. This impact model was tested against small-scale con-trolled tests on sea ice and also validated with selected full-scale measurements. The ice ridge interaction load scenario was studied with state of the art FE-model of ice ridge and ship interaction. The scientific approaches yielded solid physical background for formulating simplified load estimation formulas for the load scenarios. In addition to the main load scenarios, also impact load distributions were investigated.The whole project lasted from 2010 to 2016, and it had a steering group consisting of classification societies as well as azimuthing propulsor manufacturers. The work was reviewed and guided with the experts in the steering group. The results of the work are being included as a part of new version of Finnish-Swedish ice class rules.",

keywords = "FSICR, azimuthing propulsion, ice impact, ice class",

author = "Ilkka Per{\"a}l{\"a} and Aki Kinnunen and Lauri Kuuliala",

year = "2018",

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language = "English",

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editor = "Pentti Kujala and Liangliang Lu",

booktitle = "Marine Design XIII, Volume 2",

publisher = "CRC Press",

address = "United States",

note = "13th International Marine Design Conference, IMDC 2018, IMDC 2018 ; Conference date: 10-06-2018 Through 14-06-2018",

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Perälä, I, Kinnunen, A & Kuuliala, L 2018, Azimuthing propulsor rule development for Finnish-Swedish ice class rules. in P Kujala & L Lu (eds), Marine Design XIII, Volume 2: Proceedings of the 13th International Marine Design Conference (IMDC 2018), June 10-14, 2018, Helsinki, Finland. vol. 2, CRC Press, pp. 777-782, 13th International Marine Design Conference, IMDC 2018, Helsinki, Finland, 10/06/18.

Azimuthing propulsor rule development for Finnish-Swedish ice class rules. / Perälä, Ilkka; Kinnunen, Aki; Kuuliala, Lauri.

Marine Design XIII, Volume 2: Proceedings of the 13th International Marine Design Conference (IMDC 2018), June 10-14, 2018, Helsinki, Finland. ed. / Pentti Kujala; Liangliang Lu. Vol. 2 CRC Press, 2018. p. 777-782.

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

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AU - Perälä, Ilkka

AU - Kinnunen, Aki

AU - Kuuliala, Lauri

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PY - 2018/6/11

Y1 - 2018/6/11

N2 - With increasing number of azimuthing propulsor installed on ships, azimuthing propulsor ice class rule development for Finnish-Swedish ice class rules (FSICR) started in 2010. In the beginning of the development project, suitable load scenarios for azimuthing propulsors were identified and applicable ice load calculation methods were reviewed. The two main load scenarios for the propulsors were considered to be impact to floating ice block and penetration to ice ridge. The impact load scenario drove the development of a new dynamic impact load model for Azimuthing units. This impact model was tested against small-scale con-trolled tests on sea ice and also validated with selected full-scale measurements. The ice ridge interaction load scenario was studied with state of the art FE-model of ice ridge and ship interaction. The scientific approaches yielded solid physical background for formulating simplified load estimation formulas for the load scenarios. In addition to the main load scenarios, also impact load distributions were investigated.The whole project lasted from 2010 to 2016, and it had a steering group consisting of classification societies as well as azimuthing propulsor manufacturers. The work was reviewed and guided with the experts in the steering group. The results of the work are being included as a part of new version of Finnish-Swedish ice class rules.

AB - With increasing number of azimuthing propulsor installed on ships, azimuthing propulsor ice class rule development for Finnish-Swedish ice class rules (FSICR) started in 2010. In the beginning of the development project, suitable load scenarios for azimuthing propulsors were identified and applicable ice load calculation methods were reviewed. The two main load scenarios for the propulsors were considered to be impact to floating ice block and penetration to ice ridge. The impact load scenario drove the development of a new dynamic impact load model for Azimuthing units. This impact model was tested against small-scale con-trolled tests on sea ice and also validated with selected full-scale measurements. The ice ridge interaction load scenario was studied with state of the art FE-model of ice ridge and ship interaction. The scientific approaches yielded solid physical background for formulating simplified load estimation formulas for the load scenarios. In addition to the main load scenarios, also impact load distributions were investigated.The whole project lasted from 2010 to 2016, and it had a steering group consisting of classification societies as well as azimuthing propulsor manufacturers. The work was reviewed and guided with the experts in the steering group. The results of the work are being included as a part of new version of Finnish-Swedish ice class rules.

KW - FSICR

KW - azimuthing propulsion

KW - ice impact

KW - ice class

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SN - 9781138340763

VL - 2

SP - 777

EP - 782

BT - Marine Design XIII, Volume 2

A2 - Kujala, Pentti

A2 - Lu, Liangliang

PB - CRC Press

T2 - 13th International Marine Design Conference, IMDC 2018

Y2 - 10 June 2018 through 14 June 2018

ER -

Azimuthing propulsor rule development for Finnish-Swedish ice class rules

Abstract

Conference

Keywords

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