ANALYSIS OF SLAMMING DATA FROM THE S.S. WOLVERINE STATE

The stress recording system aboard the S.S. Wolverine State was expanded to include pressure transducers and accelerometers. Stress, pressure, and acceleration signals were recorded on magnetic tape over a period of three years, and data on hundreds of slams were recorded. Slamming occurred only at Beaufort numbers above 5, and under relative headings within about 30 degrees of head seas. Reduction of speed did not appear to reduce the frequency of slamming, but the forward draft was a significant factor. Ochis predictions of the statistical distribution of slamming occurrences were confirmed, as were his model data relating pressure and relative velocity at impact. The bow acceleration was found to be a sensitive indicator of slamming phenomena, and relationships between acceleration, velocity, and pressure were established. Slamming pressure levels were consistent with ship model test results, but were less than other full-scale and drop-test data reported in the literature. (Author)

• Corporate Authors:

  Teledyne Materials Research

  303 Bear Hill Road
  Waltham, MA  United States  02154
• Authors:
  • Wheaton, J W
  • Kano, C H
  • Diamant, P T
  • Bailey, F C
• Publication Date: 1970-8

Media Info

• Pagination: 76 p.

Subject/Index Terms

• TRT Terms: Hulls; Instrumentation; Ship motion; Slamming; Structural analysis
• Identifier Terms: Ship Structure Committee
• Old TRIS Terms: Hull instrumentation
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00015339
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: SSC-210
• Contract Numbers: N00024-68-C-5231, N00024-67-C-5312
• Files: TRIS
• Created Date: May 13 1971 12:00AM