Vibration reduction and energy harvesting of a human-seat-boat-water dynamic interaction system excited by waves
Vibration reduction and energy harvesting of a human-seat-boat-water dynamic interaction system excited by waves
A vibration isolation means for a human-seat-boat-water dynamic interaction system subject to sea waves is proposed, for which to be numerically analyzed, the governing equations with numerical solution approaches are developed. The key idea is adopting electromagnetic isolators to replace often-used seat-damper to reduce vibrations by harvesting wave energy. The human body is modelled as a mass supported by a spring-damper connected to a seat, that through the electromagnetic isolator connected to a boat simplifying as a uniform beam-like vessel travelling in sea way. The wave force in the model is an approximate form commonly used in dynamic analysis of marine engineering, consisting of three components proportional to the relative motion of ship to the water, which adds additional mass, stiffness, and damping onto the ship. The parameters in the simulations are chosen from the practical designs or experimental/numerical reports. The simulation results reveal the effects of integrated interactions on the natural frequencies and dynamic responses of the ship subjected to short/long water waves and show very large reductions of human vibration level and effectively collecting wave energy. This confirms the proposed numerical model for ship vibration reduction and wave energy collection is attractive to simulate this complex integrated interaction system, and the proposed means based on electromagnetic isolators is no doubt to realize the aim of the paper. Some guidelines for designing this type of isolators are presented, which would be one of further develop directions for the global plan seeking/collecting green energies.
Electromagnetic isolator, Human-seat-boat-water interactions, Ship dynamics in heavy seas, Vibration reduction by energy-harvesting
Zhang, Cheng
1f88206b-00ac-46f5-82c2-6c5f02dc45af
Liu, Yan
beac0ceb-6846-442c-a2b7-f510401da025
Zhu, Xiang
37adf635-8b33-403e-bdc2-f538b3a6d6cf
Li, Tianyun
dc06d254-0e19-4453-8b08-2ebaaa7384c2
Xing, Jing Tang
d4fe7ae0-2668-422a-8d89-9e66527835ce
15 November 2023
Zhang, Cheng
1f88206b-00ac-46f5-82c2-6c5f02dc45af
Liu, Yan
beac0ceb-6846-442c-a2b7-f510401da025
Zhu, Xiang
37adf635-8b33-403e-bdc2-f538b3a6d6cf
Li, Tianyun
dc06d254-0e19-4453-8b08-2ebaaa7384c2
Xing, Jing Tang
d4fe7ae0-2668-422a-8d89-9e66527835ce
Zhang, Cheng, Liu, Yan, Zhu, Xiang, Li, Tianyun and Xing, Jing Tang
(2023)
Vibration reduction and energy harvesting of a human-seat-boat-water dynamic interaction system excited by waves.
Ocean Engineering, 288 (1), [116010].
(doi:10.1016/j.oceaneng.2023.116010).
Abstract
A vibration isolation means for a human-seat-boat-water dynamic interaction system subject to sea waves is proposed, for which to be numerically analyzed, the governing equations with numerical solution approaches are developed. The key idea is adopting electromagnetic isolators to replace often-used seat-damper to reduce vibrations by harvesting wave energy. The human body is modelled as a mass supported by a spring-damper connected to a seat, that through the electromagnetic isolator connected to a boat simplifying as a uniform beam-like vessel travelling in sea way. The wave force in the model is an approximate form commonly used in dynamic analysis of marine engineering, consisting of three components proportional to the relative motion of ship to the water, which adds additional mass, stiffness, and damping onto the ship. The parameters in the simulations are chosen from the practical designs or experimental/numerical reports. The simulation results reveal the effects of integrated interactions on the natural frequencies and dynamic responses of the ship subjected to short/long water waves and show very large reductions of human vibration level and effectively collecting wave energy. This confirms the proposed numerical model for ship vibration reduction and wave energy collection is attractive to simulate this complex integrated interaction system, and the proposed means based on electromagnetic isolators is no doubt to realize the aim of the paper. Some guidelines for designing this type of isolators are presented, which would be one of further develop directions for the global plan seeking/collecting green energies.
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Accepted/In Press date: 8 October 2023
e-pub ahead of print date: 17 October 2023
Published date: 15 November 2023
Additional Information:
Funding Information:
The team at HUST is grateful for the support of the National Natural Science Foundation of China (No. 51829005 &No. 52371318 ). J.T.Xing wishes to acknowledge Huazhong University of Science and Technology for the finance support during his visit at HUST to engage this joint research paper.
Funding Information:
The team at HUST is grateful for the support of the National Natural Science Foundation of China (No.51829005&No.52371318). J.T.Xing wishes to acknowledge Huazhong University of Science and Technology for the finance support during his visit at HUST to engage this joint research paper.
Publisher Copyright:
© 2023 Elsevier Ltd
Keywords:
Electromagnetic isolator, Human-seat-boat-water interactions, Ship dynamics in heavy seas, Vibration reduction by energy-harvesting
Identifiers
Local EPrints ID: 485097
URI: http://eprints.soton.ac.uk/id/eprint/485097
PURE UUID: e01e4338-1918-4692-9ae8-90c52147a1ad
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Date deposited: 29 Nov 2023 17:38
Last modified: 17 Mar 2024 06:06
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Contributors
Author:
Cheng Zhang
Author:
Yan Liu
Author:
Xiang Zhu
Author:
Tianyun Li
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