A methodology for comparison and assessment of three crashworthy side-shell structures: the X-core, Y-core and corrugation panel structures
Paper i proceeding, 2013

Enhanced maritime safety with respect to a structure’s crashworthiness requires an innovative process which involves methodology that is reliable for its purpose and task. In numerous research projects, new innovative side-shell structures have been proposed and assessed in contrast to conventional side-shell structure designs with respect to their crashworthiness properties. The assumptions made between papers vary and also the selection of analysis method and evaluation criteria. In the current investigation, a methodology that has been verified against small and large scale structure experiments is utilised to make an in-depth comparison and assessment (by means of experiments and nonlinear finite element simulations) of three promising innovative side-shell structures referred to as the X-core, the Y-core and the intrusion-tolerant corrugated panel structures; all of them have been presented separately in the literature before. The objective is to make independent comparison of the three concepts against a typical reference double-hull side-shell structure and challenge their structural designs with respect to energy absorption, penetration depth at fracture of the inner barrier during a bulb-impact loading condition, weight and manufacturing cost. It is concluded from the inves-tigation that there is not one candidate who is superior to the others. Hence, the structures have to be further developed or trade-offs have to be made depending on the indented functionality of the structure and risk for collision related to e.g. distribution of likely collision angles.

marine structures


FE analysis


Ship collision


Jonas Ringsberg

Chalmers, Sjöfart och marin teknik, Marine Design

Per Hogström

Chalmers, Sjöfart och marin teknik, Marine Design

Proceedings of the Sixth International Conference on Collision and Grounding of Ships (ICCGS6) in Trondheim, Norway, June 17-19, 2013 (Editors J. Amdahl, S. Ehlers and B.J. Leira)







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