Comparison of Model and Full-Scale Slamming Impact Pressure Data.
Final rept. Jan-Aug 72,
MPR ASSOCIATES INC WASHINGTON D C
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The objective of the work is to demonstrate that scaling laws for slamming impact pressures which have previously been identified from model data are applicable to full-scale ships. The approach taken has been to compare impact pressure data form full-scale trials with model data on the basis of the scaling laws. Scale effects which may cause errors when extrapolating model results fro impact pressure to full-scale have been evaluated. Results for ratio of absolute impact pressure to ambient pressure have been compared for full-scale trials and model tests on the basis of an impact velocity ratio VoVl for cases of similar structural characteristics. A proposed design basis for estimation of peak pressures for slamming impacts by use of model results and a relative velocity Vo estimate based on a median value of a possible range of Vo is shown to result in conservative predictions when compared to full-scale measurements. Author
- Marine Engineering