To assess the ultimate strength limit is crucial for determining the safety margin of ships and offshore platforms against local as well as overall collapse. Moreover, ultimate strength limits is linked to buckling criteria in Class and Offshore standards giving requirements to dimensions of the load bearing structures such as plating, stiffeners, girders, hull girder etc.
Comprehensive strength analysis using simplified or more advanced analyses tools, such as non-linear FE programs, is provided. Such analyses can be used for finding optimized design solutions with respect weight saving and efficient use of material, or to assess the strength limit of structures operating under extreme conditions and having e.g. corrosion damages, buckle damages, collision damages, excessive cracks etc.
The Section for Hydrodynamics, Structures and Stability has long experience and in depth competence within the area of ultimate limit state design (ULS) as well as knowledge of governing Rules and Regulations. This multi-discipline competence ensures professional assistance in bringing innovative design ideas into robust and well functioning structures.
Features which are coped with are non-linear structural behaviour in general covering both geometrical and material effects. Sensitivity studies with respect to geometrical and particular design parameters are typical scope of work options for finding the most cost effective design solution. Simulating e.g. collision damages and assessing their effect on the residual ultimate strength is also an example of analyses which can be provided.
The main analyses tool will be the recognized non-linear FE program ABAQUS while simpler methods and codes (e.g. PULS) can also be relevant.