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A convergence study on mixed mode function – boundary element method for aircraft-VLFS-water interaction system subject to aircraft landing impacts

Jin, Jin and Xing, JingTang (2009) A convergence study on mixed mode function – boundary element method for aircraft-VLFS-water interaction system subject to aircraft landing impacts In Proceedings of the 28th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers. 11 pp, pp. 1-11.

Record type: Conference or Workshop Item (Paper)

Abstract

A mixed mode function-boundary element method was developed by the authors to analyze the dynamic behaviour of an integrated aircraft – VLFS – water interaction system exited by aircraft landing impacts. In the mathematical model, the aircraft and VLFS are considered as two elastic structures. The landing gears of the aircraft are modeled by four support units, each of which consists of a linear spring and damper. The water is assumed to be incompressible, inviscid and satisfying a linear free surface wave condition and an undisturbed condition at infinity. The motions of the aircraft and VLFS are described by their respective natural modes. The fluid domain is modelled using a boundary element approach. The coupled fluid – structure equation is solved in the time domain with Newmark approximations. In this paper, the numerical stability of the developed method is investigated. To realize this aim, convergence study is performed in determining the size of retained fluid surface, the number of retained modes of VLFS and the time step used in the time integration scheme.

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More information

Submitted date: January 2009
Published date: 31 May 2009
Additional Information: Paper number OMAE2009-79090
Venue - Dates: 28th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2009), 2009-05-31 - 2009-06-05
Keywords: vlfs, airplane-vlfs-water interaction, transient dynamic analysis, mixed mode function-boundary element method, numerical integration
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 66397
URI: http://eprints.soton.ac.uk/id/eprint/66397
ISBN: 9780791838440
PURE UUID: 83371a0c-73a2-446f-ba72-c4d5e02c158d

Catalogue record

Date deposited: 15 Jul 2009
Last modified: 19 Jul 2017 00:25

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