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Numerical analysis of violent hydroelastic problems based on a mixed MPS-mode superposition method

Numerical analysis of violent hydroelastic problems based on a mixed MPS-mode superposition method
Numerical analysis of violent hydroelastic problems based on a mixed MPS-mode superposition method

The traditional potential-flow-based hydroelasticity computation is unable to directly simulate the violent free surface deformation and slamming, and has a lack of mutual interactions between rigid-body and flexible motion parts. In this paper, the modified MPS (Moving Particle Semi-implicit) and modal superposition methods are used for the time-domain hydroelasticity computation of cylindrical shell and non-uniform beam structures involving violent free surface deformation and slamming. The improved modal superposition technique is revisited and extended to derive the time-domain governing equations for flexible shell and non-uniform beam motions, which couples rigid-body and flexible modes and considers the mutual interaction between them. The modified MPS method developed by the authors previously is first validated by the rigid cylinder water problem, and then the flexible cylindrical shell water entry and ship hull structure slamming are simulated. Relatively good agreement has been obtained between current results and the available numerical and experimental data, which shows the feasibility of the proposed model for the hydroelasticity computation involving violent free surface deformation.

Hydroelasticity, Modal superposition, MPS (Moving Particle Semi-implicit) method, Time-domain
0029-8018
285-297
Sun, Z.
9b6102e2-6e3a-435a-88d8-f962fb5a48cb
Zhang, G. Y.
57eb90b7-b182-4203-93a1-0a0be4227c34
Zong, Z.
d8f64d28-cc43-4537-89d4-40aa3ab05ceb
Djidjeli, K.
94ac4002-4170-495b-a443-74fde3b92998
Xing, J. T.
c504f7e4-75f7-4dcc-8aae-cacaa91dc90d
Sun, Z.
9b6102e2-6e3a-435a-88d8-f962fb5a48cb
Zhang, G. Y.
57eb90b7-b182-4203-93a1-0a0be4227c34
Zong, Z.
d8f64d28-cc43-4537-89d4-40aa3ab05ceb
Djidjeli, K.
94ac4002-4170-495b-a443-74fde3b92998
Xing, J. T.
c504f7e4-75f7-4dcc-8aae-cacaa91dc90d

Sun, Z., Zhang, G. Y., Zong, Z., Djidjeli, K. and Xing, J. T. (2019) Numerical analysis of violent hydroelastic problems based on a mixed MPS-mode superposition method. Ocean Engineering, 179, 285-297. (doi:10.1016/j.oceaneng.2019.03.032).

Record type: Article

Abstract

The traditional potential-flow-based hydroelasticity computation is unable to directly simulate the violent free surface deformation and slamming, and has a lack of mutual interactions between rigid-body and flexible motion parts. In this paper, the modified MPS (Moving Particle Semi-implicit) and modal superposition methods are used for the time-domain hydroelasticity computation of cylindrical shell and non-uniform beam structures involving violent free surface deformation and slamming. The improved modal superposition technique is revisited and extended to derive the time-domain governing equations for flexible shell and non-uniform beam motions, which couples rigid-body and flexible modes and considers the mutual interaction between them. The modified MPS method developed by the authors previously is first validated by the rigid cylinder water problem, and then the flexible cylindrical shell water entry and ship hull structure slamming are simulated. Relatively good agreement has been obtained between current results and the available numerical and experimental data, which shows the feasibility of the proposed model for the hydroelasticity computation involving violent free surface deformation.

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More information

Accepted/In Press date: 17 March 2019
e-pub ahead of print date: 1 April 2019
Published date: 1 May 2019
Keywords: Hydroelasticity, Modal superposition, MPS (Moving Particle Semi-implicit) method, Time-domain

Identifiers

Local EPrints ID: 432827
URI: https://eprints.soton.ac.uk/id/eprint/432827
ISSN: 0029-8018
PURE UUID: 659667cd-95ed-4974-a84d-11a9db140836

Catalogue record

Date deposited: 26 Jul 2019 16:30
Last modified: 26 Jul 2019 16:30

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Contributors

Author: Z. Sun
Author: G. Y. Zhang
Author: Z. Zong
Author: K. Djidjeli
Author: J. T. Xing

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