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HYDROELASTIC ANALYSIS OF NONLINEAR WAVE-INDUCED LOADS OF SHIP HULL

Jinze Song, H.L. Ren, Ying Dai

Open publisher page 7 citations

Abstract

The hydroelastic analysis method is employed to investigate the structural responses of ship travelling in regular and irregular head waves. A modified strip theory is proposed to determine the hydrodynamic forces, taking account of nonlinear effects due to the non-vertical hull sides, the instantaneous variation of the section drafts, and the non-simple-harmonic behaviour of the hull oscillation. The effects due to the wave impact, the bottom emergence, and the deck wetness are also considered. The equations of motion are solved in the time domain by the step-by-step approach. The numerical calculation are compared with the results of model tests in regular waves. Satisfactory agreement is found.

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What this paper is about

The hydroelastic analysis method is employed to investigate the structural responses of ship travelling in regular and irregular head waves. A modified strip theory is proposed to determine the hydrodynamic forces, taking account of nonlinear effects due to the non-vertical hull sides, the instantaneous variation of the section drafts, and the non-simple-harmonic behaviour of the hull oscillation. The effects due to the wave impact, the bottom emergence, and the deck wetness are also considered. The equations of motion are solved in the time domain by the step-by-step approach. The numerical calculation are compared with the results of model tests in regular waves. Satisfactory agreement is found.

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OpenAlex reports 7 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

The hydroelastic analysis method is employed to investigate the structural responses of ship travelling in regular and irregular head waves. A modified strip theory is proposed to determine the hydrodynamic forces, taking account of nonlinear effects due to the non-vertical hull sides, the instantaneous variation of the section drafts, and the non-simple-harmonic behaviour of the hull oscillation. The effects due to the wave impact, the bottom emergence, and the deck wetness are also considered. The equations of motion are solved in the time domain by the step-by-step approach. The numerical calculation are compared with the results of model tests in regular waves. Satisfactory agreement is found.

Key concepts: Hull, Deck, Nonlinear system, Hydroelasticity, Ship motions, Head (geology), Harmonic, Structural engineering

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