A semi-analytical model of hydroelastic slamming

A semi-analytical model of hydroelastic slamming Full article

Journal

Journal of Fluids and Structures
ISSN: 0889-9746

Output data

Year: 2021, Volume: 101, Article number : 103200, Pages count : DOI: 10.1016/j.jfluidstructs.2020.103200

Tags

Arbitrary symmetric shape; Fluid and Structure Interaction (FSI); Hydroelasticity; MLM; Slamming

Authors

Sun Z. ¹ , Korobkin A. ^2,3 , Sui X.P. ¹ , Zhi Z. ^1,4,5

Affiliations

1	School of Naval Architecture, Dalian University of Technology, Dalian, 116024, China
2	School of Mathematics, University of East Anglia, Norwich Research Park, Norwich, NR47TJ, United Kingdom
3	Lavrentyev Institute of Hydrodynamics, pr. Lavrentyeva 15, Novosibirsk, 630090, Russian Federation
4	State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian, 116024, China
5	Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai, 200240, China

A semi-analytical model of hydroelastic slamming for two-dimensional symmetric flexible bodies is presented in this paper. The hydrodynamic loads are computed using the analytical Modified Logvinovich Model (MLM) with account for elastic deflections of the body surface. The elastic deflections are described by the modal approach. The rigid and elastic motions of the body are computed at the same time together with the wetted part of the body surface. The coupled problem of elastic impact is reduced to a system of nonlinear ordinary differential equations, which is integrated in time by the implicit Newmark method with iterations at each time step. Both free fall and constant water entry cases are considered. The developed model is validated for flexible wedge and cylindrical shell water entry problems. Good agreements with existing experimental and numerical results are achieved. It is shown that the MLM significantly improves predictions of the deflections and stresses cause by the impact compared with the Wagner model of water impact. The developed model is suitable for efficient and accurate computations of water elastic impacts. © 2020 Elsevier Ltd

Sun Z. , Korobkin A. , Sui X.P. , Zhi Z.
A semi-analytical model of hydroelastic slamming
Journal of Fluids and Structures. 2021. V.101. 103200 . DOI: 10.1016/j.jfluidstructs.2020.103200 WOS Scopus РИНЦ OpenAlex

Web of science:	WOS:000619686000009
Scopus:	2-s2.0-85098492077
Elibrary:	45042937
OpenAlex:	W3114482471

DB	Citing
Scopus	13
OpenAlex	13
Elibrary	13
Web of science	15