DNV GL ANALYSIS TECHNIQUES V-1-1 PDF

Application, Scope

1. These Guidelines specify the procedure for strength assessment of container ship structures by means of Finite Element (FE) Analysis. Application of this advanced analysis method, amending the standard Rule scope, allows verification of complex structures under a more refined approach, thus enabling further optimisation of structural design and material utilisation.

2. A container ship is defined as a ship intended for the carriage of containers and equipped with the appropriate facilities.

3. The structural analysis is to be carried out on the basis of permissible stresses in accordance with the GL Structural Rules for Container Ships (I-1-5).

4. Section 1 of these Guidelines outlines the basic principles governing FE analysis.

5. Section 2 provides detailed guidance for global strength analysis of container ships using a finite element model of the entire vessel. The focus of a global FE analysis is on global stress and deformation under particular consideration of torsional response which is significant due to large hatch openings. Such an analysis is mandatory for all container ships of novel design, exceptional size, or complex structural arrangement.

6. Computer programs used for finite element analysis have to be recognised. As recognised software is considered all finite element programs that can show results to the satisfaction of Germanischer Lloyd.

7. Required fatigue strength assessment is to be based on the GL Guidelines for Fatigue Strength Analyses of Ship Structures (V-1-2).