A parametric study of joint design in a HSLC composite vessel
Paper in proceedings, 2012

Composite sandwich ships have laminated joints that contribute to a significant part of the ship’s weight. Their construction requires an extensive amount of man-hours. There is great potential for weight and production-time-reduction through alternative joint designs. According to class rules, one is not allowed to benefit from the load-carrying capability of the core, i.e. the strength characteristics of the core shall be disregarded and geometry at the joint location is disregarded as well. The objective of the current investigation was to investigate the possibility of constructing a joint where the load-carrying capability of the foam core is accounted for, leading to a reduction in weight and production time. One specific joint in a 23 m composite sandwich catamaran was selected for study - a side wall-wet deck T-joint. This joint is considered to be crucial for the structural integrity of the current vessel. A global finite element (FE) model of the catamaran was designed and analysed in ANSYS. The loads and boundary conditions were applied to the global model according to DNV’s HSLC rules. Two local FE models of the joints (2D and 3D) were utilized for a parametric analysis with respect to structure response (stress concentrations and compliance with failure and fracture criteria). Finally, the results and conclusions from the study show the possibilities and advantages of incorporating the foam core material as a load-carrying member in joint design without compromising safety.

lightweight

composite

core material

finite element analysis

joint design

parametric analysis

Author

Christian Näslund

Chalmers, Shipping and Marine Technology, Division of Marine Design

Osman Ozan Uyanik

Chalmers, Shipping and Marine Technology, Division of Marine Design

Jonas Ringsberg

Chalmers, Shipping and Marine Technology, Division of Marine Design

Luis Felipe Sanchez Heres

Chalmers, Shipping and Marine Technology, Division of Marine Design

Proceedings of The 2nd International Conference on Light Weight Marine Structures (LIWEM 2012)

1-13 Published on CD-ROM

The 2nd International Conference on Light Weight Marine Structures (LIWEM 2012)
Gothenburg, Sweden,

Chalmers Area of Advance Transport – funding 2012

Chalmers, 2012-01-01 -- 2012-12-31.

Driving Forces

Sustainable development

Innovation and entrepreneurship

Areas of Advance

Transport

Production

Energy

Materials Science

Roots

Basic sciences

Subject Categories

Reliability and Maintenance

Vehicle Engineering

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Latest update

10/11/2018