A nonlinear hydroelastic method considering wave memory effect for ship load responses in irregular waves

Chen, Zhanyang

doi:10.1007/s11771-017-3615-5

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…To date, ship motion and load responses in random waves are usually predicted on the assumption that the incident waves are long-crested irregular waves [34][35][36]. e realistic sea waves are however short-crested irregular waves.…”

Section: Eoretical Approachmentioning

confidence: 99%

“…e slamming loads F slam (t) and green water loads F gw (t) of ship sailing in short-crested irregular waves is a reason of concern. e slamming loads can be also obtained by the momentum impact theory given in (34). e vertical relative velocity of the ship with respect to the 3D wave surface can be obtained by derivating the relative displacement:…”

Section: Shock and Vibrationmentioning

confidence: 99%

See 1 more Smart Citation

Theoretical and Experimental Study on Nonlinear Hydroelastic Responses and Slamming Loads of Ship Advancing in Regular Waves

Jia

Zhao

et al. 2018

Shock and Vibration

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Wave loads estimation and structural strength evaluation are the fundamental work at the ship design stage. The hydroelastic responses and slamming strength issues are also concerned especially for large-scale high-speed ships sailing in harsh waves. To accurately predict the wave-induced motions and loads acting on the ship sailing in regular waves, a fully coupled 3D time-domain nonlinear hydroelasticity theory is developed in this paper. The vibration modal characteristics of the flexible hull structure derived by the 3D finite element method (FEM) and simplified 1D nonuniform Timoshenko beam theory are firstly described. The hydrostatic restoring force and hydrodynamic wave force are calculated on the real-time wetted surface of hull to address geometric nonlinearity due to the steep wave and large amplitude motions. The bow slamming and green water loads acting on the ship in severe regular waves are estimated by the momentum impact method and dam-breaking method, respectively. Moreover, a small-scaled segmented ship model is designed, constructed, and tested in a laboratory wave basin to validate the hydroelasticity algorithm. The results predicted by theoretical and experimental approaches are systemically compared and analyzed. Finally, future work for predictions of ship hydroelasticity and slamming loads in irregular waves is prospected.

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Section: Eoretical Approachmentioning

confidence: 99%

Section: Shock and Vibrationmentioning

confidence: 99%