Slamming Testing of Facetted Bottom

Abstract

The highest loads on bottoms of fast craft are due to slamming, or hydrodynamic impact. A 9 meter long steel/composite hybrid slamming load test facility has been employed for the purpose of furthering understanding of the slamming phenomenon. This craft is heavily instrumented with strain gages, accelerometers, cameras, an inertial navigation system and more. It has been subjected to tests in a lab environment, in calm seas, and in rough seas. Slamming tests were performed in the Atlantic Ocean at places such as off the coast of Barnegat Light, NJ. During these tests the boat was operated in sea state 3 at speeds of roughly 25 m/s. The data collected have been used to compare the behavior of the different bottom panels of the hull. In particular the response of starboard and port panels with different structural properties were compared, using time response, frequency spectra, peak counting, etc.

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Document Details

Document Type
Technical Report
Publication Date
Nov 26, 2013
Accession Number
ADA592108

Entities

People

  • Joachim L. Grenestedt

Organizations

  • Lehigh University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accelerometers
  • Atlantic Ocean
  • Composite Materials
  • Counting Methods
  • Fluid Dynamics
  • Frequency
  • Frequency Response
  • Gages
  • Inertial Navigation
  • Inertial Navigation Systems
  • Instrumentation
  • Navigation
  • Oceans
  • Slamming
  • Spectra
  • Strain Gages
  • Test Facilities

Readers

  • Aerospace Test and Evaluation
  • Marine Hydrodynamics
  • Structural Health Monitoring of Composite Structures.