The ESO method revisited

Ghabraie, Kazem 2015, The ESO method revisited, Structural and multidisciplinary optimization, vol. 51, no. 6, pp. 1211-1224, doi: 10.1007/s00158-014-1208-6.

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Title The ESO method revisited
Author(s) Ghabraie, KazemORCID iD for Ghabraie, Kazem
Journal name Structural and multidisciplinary optimization
Volume number 51
Issue number 6
Start page 1211
End page 1224
Total pages 14
Publisher Springer
Place of publication Berlin, Germany
Publication date 2015-12-20
ISSN 1615-147X
Keyword(s) Evolutionary Structural Optimization (ESO)
sensitivity analysis
compliance design
Bidirectional Evolutionary Structural Optimization (BESO)
Sequential Element Rejection and Admission (SERA)
hard-kill methods
Summary This paper examines the evolutionary structural optimisation (ESO) method and its shortcomings. By proposing a problem statement for ESO followed by an accurate sensitivity analysis a framework is presented in which ESO is mathematically justifiable. It is shown that when using a sufficiently accurate sensitivity analysis, ESO method is not prone to the problem proposed by Zhou and Rozvany (Struct Multidiscip Optim 21(1):80–83, 2001). A complementary discussion on previous communications about ESO and strategies to overcome the Zhou-Rozvany problem is also presented. Finally it is shown that even the proposed rigorous ESO approach can result in highly inefficient local optima. It is discussed that the reason behind this shortcoming is ESO’s inherent unidirectional approach. It is thus concluded that the ESO method should only be used on a very limited class of optimisation problems where the problem’s constraints demand a unidirectional approach to final solutions. It is also discussed that the Bidirectional ESO (BESO) method is not prone to this shortcoming and it is suggested that the two methods be considered as completely separate optimisation techniques.
Language eng
DOI 10.1007/s00158-014-1208-6
Field of Research 090506 Structural Engineering
091308 Solid Mechanics
010303 Optimisation
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015,Springer-Verlag Berlin Heidelberg
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