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Experimental and numerical analysis of impact effects on stiffened panels, highlighting design implications for ice-covered waters.
Repeated-impact tests were carried out on a typical stiffened panel using both a wedge-shaped ice indenter and, for comparison, a rigid steel indenter under identical conditions. The tests were performed on a drop-weight impact system under a mass-loaded configuration, and the impact force, deformation response, and failure characteristics were recorded. Numerical simulations were additionally conducted to analyze the structural response and damage evolution. Progressive permanent deformation was observed under both impact types, whereas ice impact produced stronger fluctuations and a more scattered peak-force history. The differences between the two impact modes are clarified, providing a reference for the impact-resistant design and safety assessment of ships designed for ice-covered water.
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Zhao et al. (2026) studied this question.
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