Laboratory experiments were conducted by crushing a spherical indenter into cylinders of ice. These experiments were aimed at proving the force estimates produced by a program called Direct Design for Polar Ships (DDePS). DDePS is a contact-geometry specific tool based on Popov type formulations. The ice crushing experiments were performed in open air at various impact speeds using a double pendulum impact apparatus. The ice was laboratory ice with properties close to that of multi-year ice. Values of impact speed, force and penetration were measured. This paper presents the results of these laboratory experiments which were in good agreement with DDePS.

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