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Analysis of dynamic response of a restraining system for a powerless advancing ship based on the kane method

Analysis of dynamic response of a restraining system for a powerless advancing ship based on the kane method
Analysis of dynamic response of a restraining system for a powerless advancing ship based on the kane method
Following general explanations of the working principles of different existing retardation systems to restrain an advancing powerless ship the principles of a new overhead retardation system are presented. A two dimensional simplified model of the activated overhead system is formulated based on Huston’s interpretation of the Kane methodology. Reduced Kane equations are used in the actual simulation, once initial conditions and mechanical analysis of constituent elements have been formulated. Having presented the computational process the various velocity, motion and joint constraint force characteristics of the anchor, the ship and the other elements are monitored in the time domain for the duration of the retardation process. Validation of the Kane based method is established utilising the conservation law and the Lagrangian based formulation of the retardation system within the ADAMS software. The results indicate that a peak value of constraint will occur because of the sudden movement of anchor and this peak is affected significantly by initial ship speed. Variation in anchor chain, overall cable length and its horizontal projected length has little influence upon retardation system performance, whilst the changes of sea bed friction, anchor mass, water depth, initial ship velocity and ship mass will make retardation behaviour different.
0029-8018
114-134
Liu, Junyi
7993d7d4-9623-4ab2-b26a-35dd8d19ec9a
Hearn, Grant
c1b2912b-fe5c-432c-aaa4-39c5eff75178
Chen, Xujun
e624a41f-1406-4812-82d4-f06e6880aa5c
Jiang, Zhaobing
4876c713-e4f4-4a04-b2ee-a53c8f244bb0
Wu, Guanghuai
4783b88d-b2f2-4e0c-a408-1632414cd579
Liu, Junyi
7993d7d4-9623-4ab2-b26a-35dd8d19ec9a
Hearn, Grant
c1b2912b-fe5c-432c-aaa4-39c5eff75178
Chen, Xujun
e624a41f-1406-4812-82d4-f06e6880aa5c
Jiang, Zhaobing
4876c713-e4f4-4a04-b2ee-a53c8f244bb0
Wu, Guanghuai
4783b88d-b2f2-4e0c-a408-1632414cd579

Liu, Junyi, Hearn, Grant, Chen, Xujun, Jiang, Zhaobing and Wu, Guanghuai (2017) Analysis of dynamic response of a restraining system for a powerless advancing ship based on the kane method. Ocean Engineering, 131 (1), 114-134. (doi:10.1016/j.oceaneng.2016.12.012).

Record type: Article

Abstract

Following general explanations of the working principles of different existing retardation systems to restrain an advancing powerless ship the principles of a new overhead retardation system are presented. A two dimensional simplified model of the activated overhead system is formulated based on Huston’s interpretation of the Kane methodology. Reduced Kane equations are used in the actual simulation, once initial conditions and mechanical analysis of constituent elements have been formulated. Having presented the computational process the various velocity, motion and joint constraint force characteristics of the anchor, the ship and the other elements are monitored in the time domain for the duration of the retardation process. Validation of the Kane based method is established utilising the conservation law and the Lagrangian based formulation of the retardation system within the ADAMS software. The results indicate that a peak value of constraint will occur because of the sudden movement of anchor and this peak is affected significantly by initial ship speed. Variation in anchor chain, overall cable length and its horizontal projected length has little influence upon retardation system performance, whilst the changes of sea bed friction, anchor mass, water depth, initial ship velocity and ship mass will make retardation behaviour different.

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Accepted/In Press date: 1 December 2016
e-pub ahead of print date: 11 January 2017
Published date: February 2017
Organisations: Energy & Climate Change Group

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Local EPrints ID: 404384
URI: http://eprints.soton.ac.uk/id/eprint/404384
ISSN: 0029-8018
PURE UUID: e5171993-060d-49dc-b67c-22a3911d3c14

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Date deposited: 09 Jan 2017 09:36
Last modified: 15 Mar 2024 06:12

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Contributors

Author: Junyi Liu
Author: Grant Hearn
Author: Xujun Chen
Author: Zhaobing Jiang
Author: Guanghuai Wu

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