Research of the stress-strain state of the container ship deck elements using the Karman differential equation system
DOI:
https://doi.org/10.15587/1729-4061.2016.66029Keywords:
ship plate, stress–strain state, Karman differential equation system, finite difference methodAbstract
The current stage of development of the shipbuilding industry is characterized by the emergence of new types of ships, structurally significantly different from the traditional ones. In this connection, it is necessary to build more rigorous physical models describing the behavior of ship structures under the action of external loads.
Structural mechanics of the ship, as an independent science, began to form at the beginning of the XX century. The founder of this science according to the rule can be considered a Russian scientist and shipbuilder, professor of the Naval Academy and the shipbuilding department of Petrograd Polytechnic Institute. Based on previous knowledge of the theory of elasticity to them the first rules of allowable stresses have been proposed for surface ships, the methods for evaluating the strength and stability of ship floors and reinforced plates were developed.
Currently, structural mechanics of the ship faces a number of problems requiring urgent solutions, such as the desire for maximum reduction of body materials consumption, the emergence of new, more advanced manufacturing processes of the hull. To solve these problems, it is necessary to turn to the theoretical research and use the knowledge gained during the last three centuries, various scientists involved in various developments in the science of strength of materials, theory of elasticity, and theory of plasticity and structural mechanics of the ship.
The importance of building effective and reliable calculation methods to predict the impact of the loading process on the long–term strength of structural materials is caused by the need to ensure long–term durability of structures in the conditions of insufficient and costly experimental studies.
Container shipping today is the most convenient and the most universal means of transportation. A wide variety of types of containers (dry cargo, refrigerated, insulated, flat track, tank containers) ensures not only fast loading and unloading, but also the opportunity to use the maximum vessel capacity.
The software system was studied and defined, which allows determining the deformation of the upper deck of the ship while loading and on the resulting chart voltages to determine possible locations of damage with the aim of preventing them, because any accident on the ship can not only cause human and material losses, but also major environmental disasters.
The practical value of the results of the work lies in the fact that these studies make it possible to assess the actual loading of shipbuilding structures in terms of their operation.
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Copyright (c) 2016 Valerij Maltsev, Anatoliy Nyrkov, Sergei Sokolov
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