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| CNAV0014-2 | Ship Structures and ship production
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| Duration : | 40h Th, 60h Pr, 7d FW |
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| Credits/ECTS : |
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| Holder(s) : | Jean‑David Caprace, Philippe Rigo |
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| Language : | English language |
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| Course contents : | This lecture is given in English
1) FUNDAMENTALS OF SHIP STRUCTURES
- Description of ship structure (transversal, longitudinal and mixed system), ship types (tankers, LNG, containers, passenger ships, multi-hulls ...). Components of ship structure (longitudinal stiffeners, frames, simple hull, double hull, bow and stern, motor zone, ...). - Basic structural solid mechanics- (bending moment, shear forces, torsion, ..): primary bending (hull girder), secondary components (frames) and tertiary components (plates, stiffeners,...).
- Criterions of dimensioning, states of limit, ....
- Rational approaches (direct calculation) of sizing (scantling) versus rules based approaches. Modern tools for modeling & structural analysis (FEA) & Optimisation, ....
- An important part of the course concerns practical excercices (weekly)
2) ULTIMATE STRENGTH, RELIABILITITY ANALYSYS, FATIGUE, VIBRATION, OPTIMISATION
- Description of the various limit states (service, ultimate, accident, ..) of the ship structure (yielding, buckling and tripping of beams, buckling and ultimate strength of plates and stiffened plates, ultimate bending moment of hull girder, fatigue (curves S-N), vibration, collision & grounding, ...). Ultimate strength of hull girder: simplified approach, curvature - bending moment curve and average stress and strain curve of the components (progressive collapse analysis, Smith method), non-linear analysis, fluid-structure interaction ....
- Vibrations: theory of vibrations (basic notions); technology aspects: Cause of vibrations in ship structures; Techniques of measurement, control and prevention tecniques; practical impact on design.
- Structure reliability concepts (loads and strength) in calculation of structures (rule based approaches and direct calculations).
- Materials (steel, alu, composite materials, sandwich panels, ...).
- Introduction to ship structure optimization (least cost, least weight, ...).
3) SHIPYARDS
- Shipyard layout (organisation, implantation, functions, shipyard types, etc.).
- Economical context.
- Shipyard production processes.
- Main steps of shipbuilding production (sequences, material flows, etc.).
- Modular construction (blocks, sections, etc.) .
- Main workshops in shipyards (machining, cutting, bending, forming, panel line, outfitting, straightening, etc.).
- Welding and cutting processes (welding types, welding processes, welds control, weld calculation).
- Launching methods (dry dock, slipway, etc.)
- Modern tools for production simulation and cost assessment
- Concurrent Engineering tools such as Design for Production, Lean manufacturing, Quality Management, etc.
- Scheduling notions (Potential and Pert methods) |
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| Course objective : | - The main objective is to give a general overview of the structural problems that must be considered at the conceptual design stage, early design stage and detailed design stage.
The lecture focusses on the first principle design methods and relies on rational approaches. It surveys the various limit states that must be considered for the structural design and scantling assessment.
- Concerning Shipyards: The objective is the understanding of production technologies and manufacturing methods for shipbuilding industry in order to integrate production limits at the design stage (Design for production) |
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| Prerequisites : | Good knowledge in structure mechanics |
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| Workshops : | The course includes 5 to 6 practical works. Written works are marked. |
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| Organization : | September to January, organized every year. 1/2 day classes a week and 1/2 day a week to realise practical works. |
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| Written notes : | Syllabus (available at secretary's office of ANAST) |
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| Assessment : | Practical work (25%)
Written examination (25%)
Oral examination (50%) |
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| Contacts : | Ph RIGO
Ph.rigo@ulg.ac.be
+32 (0) 4 366 93 66 |
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