Comparison of the crashworthiness of various bottom and side structures |
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| Institution: | 1. Helsinki University of Technology, Ship Laboratory, PO. Box 4100, 02015 Hut, Finland;2. Department of Mechanical Engineering, Technical University of Denmark, Maritime Engineering, Building 101E, DK-2800 Kgs. Lyngby, Denmark;3. Schelde Shipbuilding, Glacisstraat 165, 4380 AN Vlissingen, The Netherlands;1. School of Civil and Environmental Engineering, Cornell University, Ithaca, NY, USA;2. Fracture Analysis Consultants, Inc., Ithaca, NY, USA;3. Department of Convergence Industry, Seoul Venture University, Seoul, South Korea;1. Key Laboratory of Traffic Safety on Track, Ministry of Education, Central South University, Changsha 410075, China;2. School of Traffic & Transportation Engineering, Central South University, Changsha 410075, China;3. School of Traffic and Logistics, Central South University of Forestry and Technology, Changsha 410004, China;1. School of Civil Engineering, University of Queensland, St Lucia, QLD 4072, Australia;2. Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, UK;1. Centre for Autonomous Marine Operations and Systems (AMOS), Norwegian University of Science and Technology, NTNU, Norway;2. Department of Marine Technology, Norwegian University of Science and Technology, NTNU, Norway;3. CNR-INM, Institute of Marine Engineering, Rome, Italy |
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| Abstract: | The purpose of this work is to compare the resistance with damage of various types of double bottom structures in a stranding event. The comparative analyses are made by use of a commercial, explicit finite element program. The ship bottom is loaded with a conical indenter with a rounded tip, which is forced laterally into the structures in different positions. The aim is to compare resistance forces, energy absorption and penetration with fracture for four different structures. Those four structures are: a conventional double bottom, a structure (presently protected through a patent) with hat-profiles stiffened bottom plating, a structure where all-steel sandwich panel is used as outer shell and a bottom structure stiffened exclusively with hat-profiles. The paper shows that it is indeed possible to elevate the crashworthiness of side and bottom structures with regards to the loading considered here without increasing the structural weight. |
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