A Simplified Method for Analyzing Water Impact in the Initial Stages on an Elastic Rectangle Plate

For most flat-bottom marine structures, impact loads are generated by complex transient coupling effects of solid, air, and water. However, simplified forecasting methods to obtain impact loads and dynamic responses of flat-bottom structures by considering both hydroelastic and air cushion effects are rare. In this article, a new simplified analytical method of water impact on the elastic plate is proposed based on Verhagen’s model for the rigid plate. The analysis is focused on the initial stage during which the highest hydrodynamic loads are generated. Interactions between the plate, the air, and the water are simulated and analyzed. Also, fluid-structure coupling results by simplified method are compared with numerical results from Arbitrary Lagrangian‐Eulerian method in LS-DYNA code. Experimental results are used to validate the feasibility and accuracy of the simplified method. Water impact on plates with different drop heights, rigidities, and added mass is analyzed. The air cushion effect, elastic effect, and three-dimensional effect in the simplified model are also discussed.

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  • English

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  • Accession Number: 01667803
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 20 2018 4:32PM