Open AccessANALYSIS OF SHIP STABILITY IN CONDITIONS OF WAVE RUN-UP OF THE SHIP BOW
Author(s) -
Pavel Evgenievich Burakovskiy
Publication year - 2018
Publication title -
vestnik astrahanskogo gosudarstvennogo tehničeskogo universiteta. seriâ: morskaâ tehnika i tehnologiâ
Language(s) - English
Resource type - Journals
eISSN - 2225-0352
pISSN - 2073-1574
DOI - 10.24143/2073-1574-2018-2-7-13
Subject(s) - deck , ship motions , head (geology) , bow wave , marine engineering , crew , moment (physics) , displacement (psychology) , storm , seakeeping , stability (learning theory) , structural engineering , engineering , geology , hull , physics , aeronautics , computer science , quantum mechanics , machine learning , magnetic field , solar wind , psychology , oceanography , geomorphology , classical mechanics , psychotherapist
Among all types of wrecking in the world shipping, stability loss stands out for the severity of its consequences, because it is often accompanied by the death of the crew. One of the reasons for the stability loss is wave run-up of the ship bow during the storm in a head sea. The article analyzes the level of danger of hydrodynamic loads acting on the deck at the bow in conditions of its wave run-up. Theoretical study has been undertaken on the transformation of the statiсal stability diagram during the wave run-up of the ship bow. It was found out that that the nature of change in the curves of the anti-tipping moment with the increase in the hydrodynamic load acting on the bow is dependent on the ship displacement. There has been investigated the effect of the initial transverse metacentric height on the value of critical load acting on the ship deck at the bow which causes its capsizing. It can be seen that displacement of the application point of the resultant hydrodynamic forces from the midship line leads to a significant decrease of the critical load. The results of the undertaken studies testify to the need to take into account ship behavior in the developed head sea at the stage of design and regulation of ship stability, as well as during ship operation.