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Design Methodology for Protective Structures of Glass Fibre Reinforced Plastic Exposedto Trawling
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.
2012 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Complex subsea oil and gas components installed on the seabed require protective structures,traditionally made of steel or glass fibre reinforced plastic – GRP. The most critical load case is trawlfishing, where trawl weights of several tons are dragged along the seabed.This master thesis work aims to develop a design methodology for such protective GRP covers and is acontinuation of the master theses work performed by REINERTSEN Jonas Elgered and Marco Nikolic in2011.The trawl load case, which is suitable for a dynamic analysis since much energy is transferred over ashort period of time, is modelled with LS DYNA, using one model built up with shell elements and onewith thick shell elements.The idea is for the methodology to work as a tool for evaluating lamina thicknesses and layups for earlycover-geometry designs.

Place, publisher, year, edition, pages
2012. , 21 p.
Trita-AVE, ISSN 1651-7660 ; 2012:90
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-121353OAI: diva2:618555
Available from: 2013-04-29 Created: 2013-04-29 Last updated: 2013-04-29Bibliographically approved

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