Page 83 - Practical Design Ships and Floating Structures

58

- Large structures can be studied (100 panels, 900 design variables and 5000 constraints to cover up
to 10 loading cases).

A major aspect is how to integrate the LBR-5 module with existing tools (CAD, etc.). This work is
now under completion with the collaboration of industrial partners. Using new interfaces, LBR-5 will
be able to receive the geometric data (node co-ordinates, scantling, etc.) from, for instance. an
AUTOCAD, FASTSHIP, MAXSURF file or even by a simple EXCEL or ASCII file.

References
- Fleury C. (1989). CONLM, An Efficient Dual Optimizer Based on Convex Approximation
Concepts. Structural Optimization. 1.8 1-89.
- Hughes 0. F., Mc Natt T. R. (1992). Unified Structural Design Method for Standard and Non-
Standard Design Requirements, PRADS’92, v01.2, Newcastle upon Tyne, UK, 860-872.
- Rahman M. K., CaldweIl J. B. (1995). Ship Structures: Improvement by Rational Design
Optimisation. International Shipbuilding Progress. 429,6 1 - 102.
- Rig0 Ph. (1992). The Computation of Prismatic Structures, Applied to Naval Architecture. Marine
Strucrures, Elsevier. 5:3,3 13-332.
- Rig0 Ph. (2001 .a). A Module-Oriented Tool for Optimum Design of Stiffened Structures, Marine
Structures, Elsevier, (accepted for publication)
- Rigo Ph., Fleury C. (2001.b). Scantling Optimization based on Convex Linearization and a Dual
Approach, Marine Structures, Elsevier, (accepted for publication)
- Rig0 Ph. (2001.c). Least Cost Structural Optimization Oriented Preliminary Design, Proc. Ship
Production Symposium. SNAME, Ypsilanti, Michigan, USA, 20p. (accepted for publication).