Inclusion of Structural Flexibility in Design Load Analysis for Wave Energy Converters: Preprint

Yi Guo, Yi-Hsiang Yu, Jennifer van Rij, Nathan Tom

Research output: Contribution to conferencePaper


Hydroelastic interactions, caused by ocean wave loading on wave energy devices with deformable structures, are studied in the time domain. A midfidelity, hybrid modeling approach of rigid-body and flexible-body dynamics is developed and implemented in an open-source simulation tool for wave energy converters (WEC-Sim) to simulate the dynamic responses of wave energy converter component structural deformations under wave loading. A generalized coordinate system, including degrees of freedom associated with rigid bodies, structural modes, and constraints connecting multiple bodies, is utilized. A simplified method of calculating stress loads and sectional bending moments is implemented, with the purpose of sizing and designing wave energy converters. Results calculated using the method presented are verified with those of high-fidelity fluid-structure interaction simulations, as well as low-fidelity, frequency-domain, boundary element method analysis.
Original languageAmerican English
Number of pages8
StatePublished - 2017
EventEuropean Wave and Tidal Energy Conference - Cork, Ireland
Duration: 27 Aug 20171 Sep 2017


ConferenceEuropean Wave and Tidal Energy Conference
CityCork, Ireland

NREL Publication Number

  • NREL/CP-5000-68923


  • design loads
  • fluid-structure interaction
  • hydroelastic
  • wave energy converters
  • WEC
  • WEC-Sim


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