On the Calculation of Massive Object Securing on a Ship Deck

Abstract

The increasing of global trade intensity and the growth of marine cargo transportation in the civilian sector, as well as the development of new naval combat assets in the military sector stipulate the increasing demands on productivity and quality of design work to ensure the reliability of deck mounts. Despite new developments aimed at ensuring the reliability of cargo securing on ships that appear systematically, there are problems with the lack of convenient, fast and computation tolerant methods to take load distribution over support links into account, especially if the supports have an atypical configuration. Within the design of the marine version of the anti-aircraft missile system “Tor” combat module in order to ensure the reliability of the module’s mounting to the deck, the author proposed a modification of the well-known analysis method for the flexible mooring system. The modification of the analysis presented in this paper allows taking into account the effect of tipping relative to the edge of the triangular support base on the load distribution over individual links. The paper provides formulae for the tensile force component calculation of the tipping moments occurring at ship pitching. Based on the modification, a computing complex has been developed to calculate the triangular based object’s mounting system. The results of the work were applied in the production of the combat module of anti-aircraft missile system “Tor” and may be useful for calculating the reliability of similar massive objects securing to the deck.