A Study of Plate Tearing for Ship Collision and Grounding Damage

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Abstract
Some experimental test results are presented herein for the cutting of steel plates which are struck on one edge by a rigid wedge. These results were obtained on thicker plates than examined previously and are consistent with the earlier test data that were reported on the thinner plates. Empirical formulas are developed for the cutting, bending and friction energies absorbed in the steel plates and appear to provide reasonable agreement with the corresponding test results. A few preliminary test results are also reported for rigid wedges having rounded tips. The results of this study support earlier suggestions that, when plate tearing and cutting occurs, the damage of full-scale prototypes is greater than that expected from the behavior of small-scale models using the elementary principles of geometrically similar scaling.

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