Development of an engineering tool to analyze spectral fatigue of floating structures by means of hydro-elastic coupling

Authors

  • Alejandro Luna García-Valenzuela Damen Naval, The Netherlands
  • Izak Goedbloed Damen Naval, The Netherlands

DOI:

https://doi.org/10.25043/19098642.133

Keywords:

fatigue, spectral analysis, ship structures, stress RAO’s, ANSYS, MAPDL, AQWA, pyansys, damage

Abstract

Navy vessels are relative long and slender ships which must withstand, during their extensive operational life, cyclic loads produced by the seaway. Fatigue is, hence, for those vessels a dominant parameter in the structural ship design and on their operation. Due to the arising complexity of fatigue assessments, an in-house tool is developed to perform automatized spectral fatigue analysis. Tool is called SEAFALT and stands for Long-Term Spectral Fatigue Analysis. This article described the calculation process of SEAFALT, together with results of a case of study. SEAFALT controls automatically the coupling process of the hydrodynamic load calculated on each sea scenario (via ANSYS AQWA), with its correspondent Finite-Element (FE) structural response (via ANSYS MAPDL). SEAFALT calculates: the expected long-term fatigue damage on each node of the FE-model and the minimum required FAT-class.

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References

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ZURKINDEN, A., GAO, Z., MOAN, T., LAMBERTSEN, S., & DAMKILDe, L. 2014. Spectral Based Fatigue Analysis of the Wayestar - arm taking into account different control strategies. s.l. : Structural Design of Wave Energy Devices. , 2014. https://doi.org/10.1115/OMAE2013-10864

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Published

2023-01-31

How to Cite

García-Valenzuela, A. L., & Goedbloed, I. (2023). Development of an engineering tool to analyze spectral fatigue of floating structures by means of hydro-elastic coupling. Ship Science & Technology, 16(32), 55–74. https://doi.org/10.25043/19098642.133

Issue

Vol. 16 No. 32 (2023)

Section

Scientific and Technological Research Articles

License

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