File(s) under permanent embargo
The ESO method revisited
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.
History
Journal
Structural and multidisciplinary optimizationVolume
51Issue
6Pagination
1211 - 1224Publisher
SpringerLocation
Berlin, GermanyPublisher DOI
ISSN
1615-147XeISSN
1615-1488Language
eng.Publication classification
C Journal article; C1.1 Refereed article in a scholarly journalCopyright notice
2015,Springer-Verlag Berlin HeidelbergUsage metrics
Categories
No categories selectedKeywords
Evolutionary Structural Optimization (ESO)sensitivity analysiscompliance designBidirectional Evolutionary Structural Optimization (BESO)Sequential Element Rejection and Admission (SERA)hard-kill methodsScience & TechnologyTechnologyComputer Science, Interdisciplinary ApplicationsEngineering, MultidisciplinaryMechanicsComputer ScienceEngineeringSTRUCTURAL OPTIMIZATION METHODTOPOLOGY OPTIMIZATIONSHAPE OPTIMIZATION
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC