LPD-17 Pretrial Ship Shock Response Predictions: Coupled Ship-Fluid Model Generation

Jarema Didoszak, LCDR Laura Bollock, Jose Lepe, Dr. Young Shin, Naval Postgraduate School

Abstract:
This paper describes the ongoing ship shock trial modeling and simulation effort being performed in support of the LPD-17 Class Ship Shock Trials, currently scheduled for FY07. This live fire event is being modeling in an underwater explosion virtual environment following the same methodology first employed in conjunction with the DDG Class ship shock trial simulation project conducted by the Naval Postgraduate School. The ship structural model and fluid mesh have been generated independently, using FEMAP and TrueGrid®, respectively, and then coupled together for simulation using the LS-DYNA/USA solver. Key elements of the ship model and fluid mesh generation process, along with relevant information from supplementary studies concerning this unique modeling process will be presented. This is a work in progress and thus does not constitute the final modeling products nor does it intend to show final results for the pretrial predictions themselves, but rather is intended as an account of the current project status.

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