Tools for Ultra Large Container Ships

Transcription

1 Ivo Senjanović et al. University of Zagreb Faculty fo Mechanical Engineering and Naval Architecture EU FP7 Project TULCS Tools for Ultra Large Container Ships EU FP7 in Transport The 2nd Information Day, Zagreb, July 9, 2010

2 Emma Maersk Container Ship (Odense Steel Shipyard, 2006) L = 397,7 m B = 56,4 m T = 16 m

3 MOTIVATION The main objective of the TULCS project is to provide dedicated tools and methodologies for efficient and safe design of Ultra Large Container Ships. The market demand leads to Ultra Large Container Ships up to TEU with length up to 400 meters and speed around 27 knots. As a result, the wave load is significantly increased and affects the ship structural resistance (global, local, fatigue). The ULCS are quite flexible concerning torsion, so that due to possible resonance with wave load, hydroelastic response (springing & whipping) can become a critical issue in the ship structure design. The present classification rules are related to container ships of ordinary size. However, they are at the margin when ULCS are in question. The final goal of the project is to deliver clearly validated design tools and guidelines, capable of analyzing all hydro-structure interaction problems relevant to ULCS.

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6 Evaluation within the complete framework package transport theme: Application 2007 Application 2008 EU FP7 EU FP7 Applicants 146 Applicants 210 Accepted 65 Accepted 69 TULCS at the 67 th position TULCS at the 3 rd position 11.5 credits of maximum credits of maximum 15. Main remark in 2007 evaluation: It was necessary to include an EU shipyard with production of VLCS (Very Large Container Ships).

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8 1. BV France. Bureau Veritas Classification Society. Covers 140 countries with 550 offices and laboratories, employees and customers. Class over 7000 ships. Project leader. 2. MARIN The Netherlands. The Maritime Research Institute Netherlands. Research and development, consulting by model tests, calculations with mathematical models, full scale measurements and training. Optimisation of design and operation of ships and offshore structures. Staff of 260 people. Project: full scale measurements, local hydrodynamic y loading. 3. CMA CGM France. Compagnie Maritime d'affritement Compaigne Géneralé Maritime. Shipping company operating with container vessels up to 9400 TEU (Twenty-foot Equivalent Units). The 3rd container vessel ship-owner in the world. Order book: and TEU vessels. Project: operating experience and instrumentation of one LCS. 4. OSS Denmark. Odense Steel Shipyard. Project: end-user requirements. 5. CEHIPAR Spain. Canal de Experiencies Hidrodinamicas. Spanish Ministry of Defense. Calm Water Tank, Cavitation Tunnel, Ship Dynamics Laboratory. Project: model tests on green water. 6. ECM France. Ecole Centrale Marseille. 12 laboratories, 110 researchers. Project: local hydrodynamic loading, experiments. 7. TUD The Netherlands. Technical University Delft. Project: nonlinear seakeeping code at forward speed.

9 8. UZ Croatia. University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Project: global hydroelastic response, beam model, restoring stiffness, reliability. 9. DTU Denmark. Technical University of Denmark. Project: integration of work packages. 10. UEA United Kingdom. University of East Anglia. Project: local hydrodynamic loading. 11. SIRENHA France. Contract Research Company. Numerical simulations and experimental testing. (Fluid mechanics, Structural mechanics, Innovative models, Measurement systems, Motion control systems). Project: end-user requirements; operational issues; coordination and integration; demonstration, dissemination and exploitation. 12. WIKKI United Kingdom. SME for software development. Project: CFD application for slamming and green water. 13. HO France. HYDROOCEAN is SME dealing with industrial and R&D projects on numerical simulations. 14. BVB Croatia. BRZE VISE BOLJE. SME for software development. Project: overall technical coordination and integration for the final integrated tools. SME Small and Medium Enterprise.

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14 By respecting the main reviewers objection on our first application, we included Odense Steel Shipyard, the last European shipyard of large container vessels, in our project. Unfortunately, t in the meantime the shipyard is cosed, and we made contact with Hyundai Heavy Industries, South Korea, the largest builder of container vessels in the world. The problem arises since Hyundai is competitive company from EU point of view. That problem is overcome since large number of container ships built in Hyundai, are in BV class. The agreement is achieved in such a way that Hyundai will give technical documantation of 9400 TEU container vessel Rigoletto (ship-owner CMA-CGM, class BV), on disposal for project needs, and Hyundai will make a use of the most of research results.

15 FAMENA ACTIVITIES 1. Development of a sophisticated beam FEM model, based on the advanced theory of thin-walled girders, for coupled horizontal and torsional vibrations. Inclusion of shear influence on torsion, contribution of transverse bulkheads and engine room structure to hull torsional stiffness. 2. Formulation of consistent restoring stiffness which satisfies the ship equilibrium at zero wave frequency (known formulations don't satisfy that condition!). 3. Requirements for ULCS design. Guidelines and reccomendations for design. UZ, FAMENA Group: Ivo Senjanović, Stipe Tomašević, Smiljko Rudan, Joško Parunov, Nastia Degiuli, Marko Tomić, Nikola Vladimir.

16 Methodology of ship hydroelastic investigation

17 Segmented barge in waves (BGO-First, Toulon-France)

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19 Torsional transfer function, χ=60o

20 Modal differential equation of motion

21 The first dry dominantly torsional mode of TEU container vessel, 1D FEM model, ω 1 =0.639 rad/s (lateral l and bird view)

22 The first dry dominantly torsional mode of TEU container vessel, 3D FEM model, ω 1 =0.638 rad/s (lateral l and bird view)

23 Transfer function of torsional moment, a s e u ct o o to s o a o e t, 00 TEU container vessel, v=24.7 kn, χ=120 o