Simplified model for predicting impulsive loads on submerged structures to account for fluid-structure interaction

Timon Rabczuk, Esteban Samaniego, Ted Belytschko

Research output: Contribution to journalArticle

53 Citations (Scopus)


A simplified method for accounting for the effects of fluid-structure interaction (FSI) in sandwich structures subjected to dynamic underwater loads is developed. The method provides quite accurate predictions of the impulse on submerged structures for a large range of loads and core yield strengths. It is a simple model with two lumped masses, one of which is subjected to an incident wave and a rheological model to represent the core. It enables phenomena such as buckling of the components of the core to be taken into account and is simple enough to be used as a design tool. Comparisons with calculations of complete fluid-structure models show very good agreement.

Original languageEnglish
Pages (from-to)163-177
Number of pages15
JournalInternational Journal of Impact Engineering
Issue number2
Publication statusPublished - 2007 Feb 1



  • Buckling
  • Fluid-structure interaction
  • Reduced model
  • Sandwich structures

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Automotive Engineering
  • Aerospace Engineering
  • Safety, Risk, Reliability and Quality
  • Ocean Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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