Deakin University
Browse
1/1
2 files

A systems approach to shape and topology optimisation of mechanical structures

conference contribution
posted on 2012-01-01, 00:00 authored by K Fiedler, Bernard RolfeBernard Rolfe, Alireza Asgari, Timothy De Souza
Optimisation techniques have become more and more important as the possibility of simulating complex mechanical structures has become a reality. A common tool in the layout design of structural parts is the topology optimisation method, which finds an optimum material distribution within a given geometrical design space to best meet loading conditions and constraints. Another important method is shape optimisation, which optimises weight given parametric geometric constraints. In the case of complex shaped parts or elaborate assemblies, for example automobile body structures, shape optimisation is still hard to do; mainly due to the difficulty in translating shape design parameters into meaningful analysis models. Tools like the parametric geometry package SFE CONCEPT are designed to mitigate these issues. Nevertheless, shape methods usually cannot suggest new load path configurations, while topology methods are often confined to single parts. To overcome these limitations the authors have developed a method that combines both approaches into an Integral Shape/Topology Method (IST) that is capable of finding new optimal solutions. This is achieved by an automated optimisation loop and can be applied for both thin walled structures as well as solid 3D geometries. When optimising structures by applying IST, global optimum solutions can be determined that may not be obtained with isolated shape- or topology-optimisation methods.

History

Pagination

145 - 154

Location

New Forest, England

Open access

  • Yes

Start date

2012-06-20

End date

2012-06-22

ISBN-13

9781845645984

ISBN-10

1845645987

Language

eng

Publication classification

E1 Full written paper - refereed

Editor/Contributor(s)

S Hernandez, C Brebbia, W De

Title of proceedings

OPTI 2012 : Computer aided optimum design in engineering XII

Usage metrics

    Research Publications

    Categories

    No categories selected

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC