Hull girder ultimate strength of container ships in oblique sea

Darie, Ionel; Rörup, J.

doi:10.1201/9781315157368-31

Cited by 3 publications

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Darie et al [16] performed ultimate strength analyses of a cape size bulk carrier under combined global vertical bending moment and local loads. Further nonlinear FEA are performed successfully by Darie and Rörup [17] to determine the hull girder ultimate strength of container ships in oblique sea. In both cases an implicit solver implemented in LS-DYNA was used.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigations on Ultimate Strength of a Double Hull VLCC Under Combined Loads and Initial Imperfections

Lindemann

Okpeke

Ferlita³

et al. 2022

Volume 2: Structures, Safety, and Reliability

View full text Add to dashboard Cite

Nonlinear finite element analyses are performed to determine the ultimate strength of a double hull VLCC under pure vertical, horizontal and biaxial bending. A parametric finite element model is developed and the influence of nonlinear material behavior, mesh size and model length on the hull girder ultimate strength is demonstrated exemplarily for hogging and sagging conditions. An appropriate parameter configuration with respect to numerical efforts and accuracy is used to perform static implicit analyses for horizontal bending and biaxial load cases. Convergence is reached by using the full Newton-Raphson scheme — an incremental iterative solution approach. The results are validated against the well-established Smith method. Due to welding, initial deflections and residual stresses are produced. For the proposed finite element model initial deflections of plating and stiffeners have been considered. Furthermore, the influence of welding residual stresses on the ultimate hull girder strength is demonstrated for the different load cases. Nonlinear finite element analyses are also performed to determine the residual strength of the damaged double hull VLCC under combined loads. Different symmetric grounding damages are implemented by removing structural components of the model. Expectedly, the results show that the ultimate strength of the structure decreases as the damage extent increases.

show abstract

Section: Introductionmentioning

confidence: 99%