Hydroelastic analysis of slamming induced impact on stiff and flexible structures by two-way CFD-FEA coupling

Dongni Yan, Tommi Mikkola, Pentti Kujala, Spyros Hirdaris*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

In rough seas, ships may be subject to wave-induced slamming loads.Thus, modelling of fluid and structural mechanics, and their dynamic interactions can help with the evaluation of fluid actions and the prediction ofwave-induced loads for use in ship design. In this paper a partitioned two-way coupled CFD-FEA fluid–structure interaction (FSI) method is usedto study the water entry of flat plates with different impact velocities and wedges with different deadrise angles. Results show that when flexibleplate dynamics prevail, at relatively low to medium impact velocity a negative correlation between the nondimensional pressure and water entryvelocities is evident near plate centre areas. A steady correlation exists when only stiff plate dynamics prevail. Pressure differences between stiffand flexible wedges become evident at small deadrise angles. The similarity of the pressure distribution during water impingement of ideally stiffwedge structures is not valid when structural flexibility prevails.

Original languageEnglish
Number of pages13
JournalShips and Offshore Structures
Early online date30 Aug 2022
DOIs
Publication statusE-pub ahead of print - 30 Aug 2022
MoE publication typeA1 Journal article-refereed

Keywords

  • fluid–structure interactions (FSI)
  • hydroelasticity
  • ship design
  • Slamming loads
  • two-way coupling

Fingerprint

Dive into the research topics of 'Hydroelastic analysis of slamming induced impact on stiff and flexible structures by two-way CFD-FEA coupling'. Together they form a unique fingerprint.

Cite this