A systems approach to shape and topology optimisation of mechanical structures

Fiedler, K., Rolfe, B., Asgari, A. and de Souza, T. 2012, A systems approach to shape and topology optimisation of mechanical structures, in OPTI 2012 : Computer aided optimum design in engineering XII, WIT Press, Southampton, England, pp. 145-154, doi: 10.2495/OP120131.

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Title A systems approach to shape and topology optimisation of mechanical structures
Author(s) Fiedler, K.
Rolfe, B.ORCID iD for Rolfe, B. orcid.org/0000-0001-8516-6170
Asgari, A.
de Souza, T.
Conference name Computer Aided Optimum Design in Engineering. Conference (12th : 2012 : New Forest, England)
Conference location New Forest, England
Conference dates 20-22 Jun. 2012
Title of proceedings OPTI 2012 : Computer aided optimum design in engineering XII
Editor(s) Hernandez, S.
Brebbia, C.A.
De, Wilde W.P.
Publication date 2012
Conference series Computer Aided Optimum Design in Engineering Conference
Start page 145
End page 154
Total pages 10
Publisher WIT Press
Place of publication Southampton, England
Keyword(s) topology optimisation
shape optimisation
simultaneous shape and topology optimisation
structural optimisation
Summary 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.
ISBN 9781845645984
Language eng
DOI 10.2495/OP120131
Field of Research 109999 Technology not elsewhere classified
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category E1 Full written paper - refereed
Persistent URL http://hdl.handle.net/10536/DRO/DU:30051127

Document type: Conference Paper
Collection: Institute for Frontier Materials
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