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Optimisation of composite boat hulls using first principles and design rules

Optimisation of composite boat hulls using first principles and design rules
Optimisation of composite boat hulls using first principles and design rules
The design process is becoming increasingly complex with designers balancing societal, environmental and political issues. Composite materials are attractive to designers due to excellent strength to weight ratio, low corrosion and ability to be tailored to the application. One problem with composite materials can be the low stiffness that they exhibit and as such for many applications they are stiffened. These stiffened structures create a complex engineering problem by which they must be designed to have the lowest cost and mass and yet withstand loads. This paper therefore examines the way in which rapid assessment of stiffened boat structures can be performed for the concept design stage. Navier grillage method is combined with genetic algorithms to produce panels optimised for mass and cost. These models are constrained using design rules, in this case ISO 12215 and Lloyd's Register Rules for Special Service Craft. The results show a method that produces a reasonable stiffened structure rapidly that could be used in advanced concept design or early detailed design to reduce design time.
structural optimisation, composite grillages, concept design, genetic algorithm, analytical modelling
0029-8018
62-70
Sobey, A.J.
e850606f-aa79-4c99-8682-2cfffda3cd28
Blake, J.I.R.
6afa420d-0936-4acc-861b-36885406c891
Shenoi, R.A.
a37b4e0a-06f1-425f-966d-71e6fa299960
Sobey, A.J.
e850606f-aa79-4c99-8682-2cfffda3cd28
Blake, J.I.R.
6afa420d-0936-4acc-861b-36885406c891
Shenoi, R.A.
a37b4e0a-06f1-425f-966d-71e6fa299960

Sobey, A.J., Blake, J.I.R. and Shenoi, R.A. (2013) Optimisation of composite boat hulls using first principles and design rules. Ocean Engineering, 65, 62-70. (doi:10.1016/j.oceaneng.2013.03.001).

Record type: Article

Abstract

The design process is becoming increasingly complex with designers balancing societal, environmental and political issues. Composite materials are attractive to designers due to excellent strength to weight ratio, low corrosion and ability to be tailored to the application. One problem with composite materials can be the low stiffness that they exhibit and as such for many applications they are stiffened. These stiffened structures create a complex engineering problem by which they must be designed to have the lowest cost and mass and yet withstand loads. This paper therefore examines the way in which rapid assessment of stiffened boat structures can be performed for the concept design stage. Navier grillage method is combined with genetic algorithms to produce panels optimised for mass and cost. These models are constrained using design rules, in this case ISO 12215 and Lloyd's Register Rules for Special Service Craft. The results show a method that produces a reasonable stiffened structure rapidly that could be used in advanced concept design or early detailed design to reduce design time.

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Rapid bi-objective optimisation of composite boat hulls using first principles and design rules REVISED.pdf - Author's Original
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e-pub ahead of print date: 21 April 2013
Published date: 1 June 2013
Keywords: structural optimisation, composite grillages, concept design, genetic algorithm, analytical modelling
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 350091
URI: http://eprints.soton.ac.uk/id/eprint/350091
ISSN: 0029-8018
PURE UUID: 4d60ff5d-e008-438c-9141-cddbacc849e7
ORCID for A.J. Sobey: ORCID iD orcid.org/0000-0001-6880-8338
ORCID for J.I.R. Blake: ORCID iD orcid.org/0000-0001-5291-8233

Catalogue record

Date deposited: 18 Mar 2013 11:46
Last modified: 18 Feb 2021 17:09

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Contributors

Author: A.J. Sobey ORCID iD
Author: J.I.R. Blake ORCID iD
Author: R.A. Shenoi

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