Integrated modelling, design and analysis of submarine structures

Abstract

The paper describes an advanced, integrated approach to structural modelling, design and analysis of underwater vehicles, employing methods ranging from simple formula-based design tools to 3D geometric modelling and non-linear finite element analysis. Emphasis is given to a specially developed domain-specific language called RMGScript for creating 3D structural geometric entities within a hierarchical and relational framework, as well as capabilities uniquely oriented to structural modelling of underwater vehicles, such as incorporating out-of-circularity imperfections in pressure hull geometry, and representing localised variations in plating thickness using thickness zones or maps. Applications to structural modelling of a submarine are illustrated throughout the paper. It concludes with example results for a notional submarine exhibiting pressure hull strength prediction, global and local stress analysis, and dynamic analysis.

Keywords:

• underwater vehicle
• submarine structure
• structural design
• pressure hull collapse
• geometric modelling
• XML schema

Additional information

Funding

Financial support for this work was provided by the United Kingdom Ministry of Defence and by the Canadian Department of National Defence.