Prof. A. HAGE,
Code = EMSHIP S1-3 (Semester S1)
Workload: Lectures (30h), projects (60h)
Number of credits: 6
The objective is to perform a complete project of a ship (including the general arrangement, scantling, stability, drawings, etc.). The lecture covers the following aspects:
- Ship design methodology & project.
- CAD & CAM tools – project oriented.
- Maritime regulations & classifications societies – project oriented.
a) SHIP DESIGN METHODOLOGY & PROJECT
Set up of project: Mission of naval architecture, principal steps of the project, program of ship «Loop of ship», definition of the main dimension (lengths, surfaces, volumes). Displacement and weight estimation. General characteristics: coefficients in function of the speed, geometric characteristic of hull, adjustment of dimensions for good behavior in sea and stability, control of stability and of trim. Propulsive power: practical rules of dimensioning, special propulsions and their utilizations. Energy on board: Balance sheet of electric and organization of distribution of energy. Protection against corrosion. Consistency of the project and final control.
Multihull hull: Planning catamaran, catamaran with foil, SWATH, SLICE, with Outriggers. Comparison - advantages and disadvantages: resistance, seakeeping, performances in sea, behaviors of route, maneuverability, control of positioning, structural resistance. Recommendations for concept and design of multihull.
- Explosion: Impact of shock and grounding on design of ship. Dimensioning following empirical formulations.
b) CAD & CAM TOOLS – PROJECT
- Use of CAD (2D, 3D) and CAE tools in ship design.
- Software for ship design (Maxsurf, Lunais, Napa, Argos, Rhinoceros): 3D hull modeling by using NURB Surfaces (fast and intuitive modeling of the hull shape by means of control points), general arrangement, tank capacities, weight estimation, stability, external aspect, internal structure.
- Numerical Simulations and calculations:
- CFD & Ship resistance: Fluent, Fine Marine
- Structural analysis (FEM: SAMCEF, LSDYNA&USA; MARS): linear static analysis, non-linear analysis, Simulation of grounding and collisions, Underwater and air explosions.Virtual Reality: Virtual Enterprise & Exchange of technical data.
c) MARITIME REGULATIONS & CLASSIFICATIONS SOCIETIES
- Rules approach (classifications societies): BV, ABS, Lloyds, Applications using classification society rules. International regulations: IMO, IACS, SOLAS.
- Classification, surveillance and inspection for maritime and inland ships.
- Environment: Protection against pollution «MARPOL».
- Risk assessment: pollution by hydrocarbons, impact on ship design.
Basic ship theory (E. C. Tupper, KJ Rawson) and Principle of Naval Architecture (Edward V. Lewis)
This lecture is an introduction (design oriented) to Ship Design. Applications and exercises to small craft are given in the ULiège-ANAST Lectures (see here after “Design of Small Crafts and High Speed“).
More advanced and complementary lectures in Sailing Boat, Pleasure Yacht are available by selecting Genoa University - Polo Universitario di La Spezia - for the third semester (see lecture contents here after).
Form of exam:
Oral – discussion about student project (30 min).