МИТ № 3 2012
DESIGN OPTIMIZATION BASED ON THE THEORY OF FUZZY SETS
Artiushina T. G.
Russian Academy of Economics Plekhanov
e-mail: t.g.art@yandex.ru
In article the structural and mathematical description of model of hierarchical, multi-purpose system of a «vessel», on the basis of the theory of the indistinct sets, allowing investigating practical aspects of multilevel optimization is executed. The offered model is intended for use at preliminary design stage that will allow increasing quality and validity of design decisions.
Key words: multilevel optimization, theory of fuzzy sets, coordination of the results of optimization.
PECULIARITIES OF OPTIMIZATION PROBLEM OF PRIMARY CHARACTERISTICS AND ELEMENTS OF FPSO VESSELS STATEMENT
Brekhov S. D., Gaikovich A. I.
Saint-Petersburg State Marine Technical University
e-mail: serge.brekhov@gmail.com;
e-mail: a_gaikov@mail.ru
In this article the architectural and design peculiarities of Floating Production, Storage and Offloading vessels are considered. On the base of system analysis the optimization problem of FPSO designing with simulation procedure included is formed.
Key words: Floating production storage and offloading vessel, FPSO, shelf, optimization, mathematical model, simulation.
THE MODELING OF METEOTSUNAMI IN THE SAKHALIN-KURIL REGION
Zolotukhin D. E.
Institute of Marine Geology and Geophysics FEB RAS
e-mail: DimZol@rambler.ru
В данной работе рассматривается моделирование метеоцунами в сахалинско-курильском регионе. Выполнен анализ натурных данных по метеоцунами, предоставленных ФГБУ СахУГМС. При численном моделировании использовалась предложенная В. Н. Храмушиным вычислительная модель и разработанный СКБ САМИ ДВО РАН программный комплекс. В работе путем сравнения результатов численного моделирования реальных метеоцунами с соответствующими натурными данными выполнена оценка пригодности численной модели «малого круга» циклона для прогноза метеоцунами, вызываемых циклонами, и расчета их характеристик.
Key words: meteotsunami, numerical simulation, cyclone.
INTELLIGENCE SYSTEM OF TRAINING TO DECISION-MAKING METHODS IN EXTREME SITUATIONS ON THE BASIS OF THE MODERN CATASTROPHE THEORY
Prokhnich V. P., Kordas T. V.
Kaliningrad state technical university
tel.: 8-4012-66-24-16;
e-mail: prochnich@mail.ru
Questions of operators training of onboard intelligence systems of maintenance of safety navigation in extreme situations are considered. The special attention addresses on construction of algorithms of training at realization of management and decision-making in the complex dynamic environment on the basis of a competition principle.
Key words: intelligence system, training operators, safety navigation, extreme situations, decision-making.
CREATION OF MATHEMATICAL AND COMPUTER MODELS OF WAVE PROCESSES IN THE FINAL DEPTH
Simakov Y. E.
Sakhalin State University
e-mail: e-mail: s-im1a@yandex.ru
tel.: 89147463137
The article revealed the relevance of modeling the wave processes in solving applied problems. Work continues to develop a mathematical model of wave propagation in the ocean. The equations describing the wave dynamics at final depth. The issues about the trajectory of fluid particles and the group velocity of the waves are reviewed.
Key words: modeling of ocean processes, experience Ahlborn, the wave theory, final depth, the group velocity of waves.
APPLICATION OF RISK THEORY FOR TECHNICAL CONDITION ASSESSMENT OF THE HULL STRUCTURE
Tryaskin V. N.,
State Marine Technical University of St. Petersburg
tel.: (812) 714-09-54
e-mail: ssdgmtu@gmail.com
Hoang Minh Son
Astrakhan State Technical University
e-mail: hminhson@yahoo.com
The article deals with general methods of risk assessment and a possible approach of these methods to assess the technical condition of the hull structure. To assess the risk of failure or damage to the structural element, an approach based on the result of ultrasonic measurements of residual thickness is offered. Application of the theory of risk can not only evaluate but also to predict a technical condition of the elements of the hull. On this basis, it is possible to develop measures to improve the reliability of ship structures, to justify the overhaul period and to formulate the requirements for structural elements.
Key words: hull condition assessment, the theory of risk, the likelihood analysis, consequence analysis, risk index, thickness measurement.
THE INVESTIGATION OF THE EFFECTS
OF VERTICAL QUAY WALL ON THE HYDRODYNAMICS CHARACTERISTICS
OF THE SHIP OSCILLATING IN SHALLOW WATER
Semenova V. Yu., Soe Moe Aung
State Marine Technical University of St. Petersburg
tel.: (812) 682-17-46
e-mail: sem_viktoria @mail.ru
This paper is about the three dimensional potential problem of the motions of a ship in shallow water near the vertical quay wall.. Numerical method is used for the solution of this problem. The investigation of the influence of distance between the vertical wall and the ship on the added masses and damping coefficients, exciting forces and motion responses is given.
Key words: shallow water, method of image representation, Green function, added masses of a ship, damping coefficients, motion responses.
DESIGN ACCOUNTING OF VARIABLE OPERATIONAL MODES OF FISHING VESSEL
Tsarev B. A., Chasovnikov N. Yu.
State Marine Technical University of St. Petersburg
e-mail: n.chasovnikov@gmail.com
tel.: (812) 494–09–69
Fishing vessel specific design properties are discussed leading to necessity of new methodical approaches to formulate optimization models of design characteristics. More attention is paid to seaworthiness, performance on rough water, maneuverability, propulsion with trawl, volumetric capacity and stability. Design research may be conducted more efficiently with account of variable operation modes.
Key words: fishing vessel, variable modes, design constraints, fishery.