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Vibration characteristics analysis on ship propulsion system taking hull deformations into account

Vibration characteristics analysis on ship propulsion system taking hull deformations into account
Vibration characteristics analysis on ship propulsion system taking hull deformations into account
Since an evident tendency of the shipbuilding is that the sizes of ships are larger and larger, the dynamic interactions between the propulsion system and ship hull in large scale ships are much severer than those of the small sized ships. Ship hull deformations caused by the action of heavy excited wave forces could affect the vibration characteristics of the propulsion system through bearings mounted on the ships. The reliability and safety of the propulsion system would be in a dangerous condition. In this paper, a novel simplified hull-propulsion system mathematical model is presented to investigate the dynamic interactions between the ship propulsion and hull deformations. Ship hull deformations were obtained as the excited forces under different sea conditions by numerical analysis. Then, based on the gained hull deformations, variable parameters involving stiffness of support bearings are considered on the vibration characteristics of propulsion. The findings of this work may provide a new insight to keep economy and security in both shipbuilding and ship operation fields.
hull- propulsion system interactions; marine propulsion system; variable parameters; vibration behaviour
1848-6339
783-790
Tian, Zhe
667c7c4f-f6d2-4af8-a7de-96a885d90501
Yan, Xinping
66cfd5ac-183c-4019-9983-fb7a06883f8c
Zhang, Cong
c133e98d-4a93-4273-931a-b3f6c908bb7a
Xiong, Yeping
51be8714-186e-4d2f-8e03-f44c428a4a49
Yang, Ping
eead0b00-bbdf-42d9-a2b9-6f69632799fb
Tian, Zhe
667c7c4f-f6d2-4af8-a7de-96a885d90501
Yan, Xinping
66cfd5ac-183c-4019-9983-fb7a06883f8c
Zhang, Cong
c133e98d-4a93-4273-931a-b3f6c908bb7a
Xiong, Yeping
51be8714-186e-4d2f-8e03-f44c428a4a49
Yang, Ping
eead0b00-bbdf-42d9-a2b9-6f69632799fb

Tian, Zhe, Yan, Xinping, Zhang, Cong, Xiong, Yeping and Yang, Ping (2016) Vibration characteristics analysis on ship propulsion system taking hull deformations into account. Technical gazette, 23 (3), 783-790, [160138]. (doi:10.17559/TV-20150730145513).

Record type: Article

Abstract

Since an evident tendency of the shipbuilding is that the sizes of ships are larger and larger, the dynamic interactions between the propulsion system and ship hull in large scale ships are much severer than those of the small sized ships. Ship hull deformations caused by the action of heavy excited wave forces could affect the vibration characteristics of the propulsion system through bearings mounted on the ships. The reliability and safety of the propulsion system would be in a dangerous condition. In this paper, a novel simplified hull-propulsion system mathematical model is presented to investigate the dynamic interactions between the ship propulsion and hull deformations. Ship hull deformations were obtained as the excited forces under different sea conditions by numerical analysis. Then, based on the gained hull deformations, variable parameters involving stiffness of support bearings are considered on the vibration characteristics of propulsion. The findings of this work may provide a new insight to keep economy and security in both shipbuilding and ship operation fields.

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VIBRATION CHARACTERISTICS ANALYSIS ON SHIP PROPULSION - Version of Record
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Published date: 20 June 2016
Keywords: hull- propulsion system interactions; marine propulsion system; variable parameters; vibration behaviour

Identifiers

Local EPrints ID: 443210
URI: http://eprints.soton.ac.uk/id/eprint/443210
ISSN: 1848-6339
PURE UUID: 118d06f0-e036-4f91-a436-87b5541053fa
ORCID for Yeping Xiong: ORCID iD orcid.org/0000-0002-0135-8464

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Date deposited: 17 Aug 2020 16:30
Last modified: 18 Aug 2020 01:35

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