Slamming Response of Vertical Acceleration for Large Ships in Rough Sea
In rough sea,the fore ship flutter phenomenon is obvious.The continuous slamming acceleration is easy to cause panic,which will also affect equipment function and cause lashing problems.A nonlinear time-domain hydro-elastic method is used to predict the vertical acceleration of a large ship,and the results are compared with its model test.The phase differences of high and low frequency components are analyzed,and the correlation between the fore-ship acceleration response and bow impact resultant force is studied.Finally,the sensitivity analysis of the parameters affecting fore-ship acceleration is carried out by changing wavelength,wave height,ship speed and draft respectively.In addition to taking favorable routes,ships in rough sea conditions can consider active stall or pre-increase ballast to reduce hull flutter response.
large shipvertical slamming accelerationresponse character