The University of Southampton
University of Southampton Institutional Repository

Effects of varying strain-rate on the behaviour of FRP yacht hull Structure under Slam Load Conditions

Record type: Thesis (Masters)

The recent progress of the performance of sailing yachts has been driven by the
continuing use and development of lightweight sandwich structures made of
polymeric composite materials. So far the structural design of sailing yachts has
relied on static or quasi-static approaches which usually lead to conservative
design. Sailing yachts undergo several diverse dynamic loads in a seaway. Rigs
and rigging, deck and hull have to be designed to withstand local and distributed
loads whose entity is always difficult to determine. In this respect, the phenomenon
of slamming, namely the impact of the hull bottom against the water surface in a
rough sea, and its effects on the structure represent a crucial issue.

This implies that when structural optimisation is required it is necessary to better
define the external loads and the strain-rate properties of the material utilized.
With this in mind, this thesis explores the dynamic response of a FRP (fibre
reinforced plastics) sandwich hull panel subject to slam loads.

This is achieved initially by investigating experimentally the dynamic properties of
FRP under rates of strain typically experienced by sailing yacht structures. A
systematic methodology is then proposed to describe the strain-rate behaviour of
the material by LS-DYNA explicit finite element code. This methodology is
subsequently applied to examine the response of a hull panel to a slam load.
It is shown that the ALE (Arbitrary Lagrangian-Eulerian) method, within LSDYNA
code, is suitable to model the fluid-structure interaction slam problem and
to assess the relative entity of the load to be used in the panel analysis.
A static finite element analysis of the panel is also carried out based on standard
design rules. Results are compared with the dynamic approach presented and the
conservativeness of the static method is underpinned.

Developing the knowledge of both the dynamic properties of the materials and the
use of tools such as explicit finite element codes is shown to be a valid approach to
optimise the design of sailing structures under slam load.

PDF Corrado_Labriola_MPhil_2006.pdf - Other
Download (4MB)

Citation

Labriola, Corrado (2006) Effects of varying strain-rate on the behaviour of FRP yacht hull Structure under Slam Load Conditions University of Southampton, School of Engineering Sciences, Masters Thesis , 149pp.

More information

Published date: September 2006
Organisations: University of Southampton

Identifiers

Local EPrints ID: 142741
URI: http://eprints.soton.ac.uk/id/eprint/142741
PURE UUID: 99ae6c75-e9e6-41a4-9793-4a977ce7f192

Catalogue record

Date deposited: 18 Aug 2010 15:34
Last modified: 18 Jul 2017 23:11

Export record

Contributors

Author: Corrado Labriola
Thesis advisor: Ramanand Shenoi

University divisions


Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×