Validation and model updating of weld in finite element model of K-node structure using experimental data for fatigue analysis

Mikkel Løvenskjold Larsen, Vikas Arora, Marie Lützen, Ronnie R. Pedersen, Eric Putnam

Publikation: Kapitel i bog/rapport/konference-proceedingKonferencebidrag i proceedingsForskningpeer review


Several methods for modelling and finite element analysis of tubular welded joints are described in various design codes. In this paper, experimental strain results from a full-scale K-node fatigue test are compared to the corresponding finite element models in order to investigate the accuracy of three different weld modelling techniques for predicting strains in the welds. The first model is made without any weld geometry, the second model is made using triangulated geometry as proposed by the DNVGL and the last is modelled using a simple fillet blend. The results have shown a good accuracy between the experimental results and the FE models using the simple fillet blend weld and weld from DNVGL, however small discrepancies between finite element predictions and experimental results are observed. Subsequently, a parameter-based finite element model updating technique is applied to the simple fillet blend weld, to reduce the discrepancies. The results have shown that the updated finite element of simple fillet bend weld represents the tubular weld in the full-scale K-node accurately.

TitelTrends in the Analysis and Design of Marine Structures
RedaktørerJoško Parunov, Carlos Guedes Soares
ForlagCRC Press
Publikationsdato15. apr. 2019
ISBN (Trykt)978-0-367-27809-0
ISBN (Elektronisk)9780429298875
StatusUdgivet - 15. apr. 2019
Begivenhed7th International Conference on Marine Structures - Dubrovnik, Kroatien
Varighed: 6. maj 20198. maj 2019
Konferencens nummer: 7


Konference7th International Conference on Marine Structures
NavnProceedings in Marine Technology and Ocean Engineering

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