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Marine Structural Mechanics

date: Jan 08, 14views: 1900

Marine Structural Mechanics:


    This research direction mainly focuses on mechanic science and technology involved in the process of ship design, construction, use and maintenance so as to make sure the safety and reliability of the hull structure and to meet the requirements of structure and marine equipment installed on it. As the key question for future ship mechanics, structural weight reduction of maritime ship, increase of the carrying capacity, extension of fatigue life and effective preparedness and control of accident damage directly enhance the vitality and economy. ICNAME focuses on technology such as conventional wave load calculations, sailing ship wave load calculations, water elastic load forecasting, ultimate strength analysis, buckling reliability, ultimate strength reliability, underwater bubble explosion dynamics, ship structure antiknock impact, structural reduction of vibration and noise, etc.


Achievements:


1. Key Technology of preventing hull structure from explosion and damage
    Since underwater explosion imposes a damage to hull structure, it is time we conducted related research and studies. Starting from the basic principles of interaction among underwater explosion bubble, free surface and nearby structures, our studies design the elasticity of structure and simulate the important dynamical behaviors of the bubble swelling, collapsing and forming jet flow. Our studies also reveal the damage mechanism from the underwater explosion bubble load and verify the correctness of the calculation methods and computational models with existing experimental data. In a word, our studies achieve the goal of optimizing ship design with explosion and shock resistance.


2. Wave Loads Calculation System
    The forecast of ship wave loads is the most primary issue of calculating and assessing the hull strength. After a dozen years of research, HEU has developed the WALCS (Wave Loads Calculation System) with Independent property rights. The software is three-dimensional hydrodynamic software for wave loads calculation and various types of ship motions, including multi-hull. The system is applicable to both unlimited depth and limited depth, taking the impact of speed into consideration. The system has reached a level of international studies. The software, released jointly by HEU and China Classification Society, has been included in the Statutory Audit Software Catalog of the China Classification Society.


Future Research Directions:
(1) Development of wave load calculation software for a variety of ship type;
(2) Research on hull structural strength of extra-large ship considering the elastic effect;
(3) Research on forecasting method of icebreaking capacity and load of ship sailing in ice Region (icebreaker);
(4) Research on wave load forecast and structural response analysis technology of trimaran;
(5) Research on noise forecast and design technology of ship cabin;
(6) Research on key technology related to (GBS) standard of target ship construction;
(7) Research on dynamic response of ship structure under the influence of underwater explosion transient loads;
(8) Research on coupling between underwater explosion bubble and complex boundary;
(9) Research on coupling characteristics between ship hull structure and dynamics of the impact of large equipment;
(10) Research on ship hull vibration and acoustic radiation characteristics;
(11) Research on coupling characteristics between ship hull structure and dynamics of the impact of large equipment;
(12) Research on ship hull vibration and acoustic radiation characteristics;


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