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Title:Optimization of extrusion process by genetic algorithms and conventional techniques
Authors:Jurković, Zoran (Author)
Brezočnik, Miran (Author)
Grizelj, Branko (Author)
Mandić, Vesna (Author)
Files:.pdf Tehnicki_vjesnik_2009_Jurkovic_et_al._Optimization_of_extrusion_process_by_genetic_algorithms_and_conventional_techniques.pdf (469,47 KB)
MD5: 5C3E5C0C681E7AECDA32F27A1FB487E5
URL http://hrcak.srce.hr/45722
Work type:Scientific work (r2)
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:The purpose of this research is the determination of the optimal cold forward extrusion parameters with the minimization of tool load as objective. This paper deals with different optimization approaches in order to determine optimal values of logarithmic strain, die angle and friction factor with the purpose to find minimal tool loading obtained by cold forward extrusion process. Two experimental plans based on factorial design of experiment and orthogonal array have been carried out. Classical optimization, according to the response model of extrusion forming force, and the Taguchi approach are presented. The obtained extrusion force model as the fitness function was used to carry out genetic algorithm optimization. Experimental verification of optimal forming parameters with their influences on the forming forces was also performed. The experimental results show an improvement in the minimization of tool loading. The results of optimal forming parameters obtained with different optimization approaches have been compared and based on that the characteristics analysis (features and limitations) of presented techniques.
Keywords:metal forming, forward extrusion force optimization, design of experiments, Taguchi approach, genetic algortihm
Year of publishing:2009
Number of pages:str. 27-33
Numbering:št. 4, Letn. 16
ISSN on article:1330-3651
COBISS_ID:13764886 New window
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Record is a part of a journal

Title:Tehnički vjesnik
Shortened title:Teh. vjesn.
Publisher:Strojarski fakultet u Slavonskom Brodu, Elektrotehnički fakultet u Osijeku, Građevinski fakultet u Osijeku
COBISS.SI-ID:15346181 New window


License:CC BY 4.0, Creative Commons Attribution 4.0 International
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:31.05.2012

Secondary language

Title:Optimizacija procesa istiskivanja primjenom genetskog algoritma i konvencionalnih tehnika
Abstract:Svrha ovoga rada je određivanje optimalnih parametara procesa hladnog istosmjernog istiskivanja s ciljem minimizacije opterećenja alata. U radu su predstavljeni različite optimizacijski pristupi u cilju definiranja optimalnih vrijednosti logaritamske deformacije, kuta matrice i faktora trenja s ciljem određivanja minimalnog opterećenja alata procesa hladnog istosmjernog istiskivanja. U tomu cilju izvedena su dva eksperimentalna plana temeljena na faktornom ortogonalnom planu i ortogonalnom nizu. Predstavljena je klasična optimizacija dobivenog modela sile istiskivanja kao iTaguchi pristup. Dobiveni model sile istiskivanja korišten je kao funkcija cilja u optimizaciji pomoću genetskog algoritma. Eksperimentalna provjera optimalnih parametara procesa i njihov utjecaj na silu istiskivanja je također prikazan u radu. Eksperimentalni rezultati prikazuju poboljšanja u procesu minimizacije opterećenja alata. Izvršena je usporedba rezultata dobivenih različitim optimizacijskim tehnikama, kao i analiza prezentiranih tehnika s njihovim mogućnostima i ograničenjima u praktičnoj primjeni.
Keywords:oblikovanje z deformiranjem, optimizacija sile istosmernega iztiskavanja, načrtovanje eksperimentov, Taguchi pristop, genetski algoritmi


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