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Title:Večkriterialno optimiranje avtomobilske konstrukcije z uporabo metode končnih elementov
Authors:ID Glavač, Matej (Author)
ID Ren, Zoran (Author)
Files:URL http://www.dlib.si/details/URN:NBN:SI:doc-TJ977GSN
 
Language:Slovenian
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:Pri razvoju motornih vozil poskusamo z uporabo računalnisko podprtih numeričnih metod ze v zgodnji razvojni fazi, pred izdelavo prvega prototipa, zagotoviti zelene ciljne vrednosti dobe trajanja vozila, obnašanja vozila med trkom, zagotovitev udobja potnikov med voznjo itn. Te ciljne vrednosti pa so odvisne od mnogih vplivnih parametrov. Napetost, ki se pojavi na analiziranem delu, je le ena od ciljnih vrednosti, ki jih je treba upoštevati pri razvoju. Zaradi zapletenosti danasnjih numeričnih modelov se vse pogosteje uporabljajo samodejni postopki optimiranja konstrukcij vozil. Z uporabo parametričnih modelov MKE je mogoče ne samo ugotoviti, ampak tudi optimirati vplivne parametre, kakor so recimo debelina sten in konstrukcije površine avtomobilskega dna. V prispevku je prikazan postopek večkriterialnega optimiranja avtomobilskih sestavov, ki temelji na sistematični kombinaciji tržnih in netržnih računalniških programov za izvedbo inženirskih analiz avtomobilskih konstrukcij po metodi končnih elementov (MKE). Ti programi so povezani z namenskimi vmesniki, ki omogočajo samodejno povezavo med njimi. Samo optimiranje temelji na genetskih ali gradientnih algoritmih. Odprtost razvitega sistema omogoča ugotavljanje in optimizacijo parametrov, ki vplivajo na ciljne vrednosti in izhajajo iz navidezno ustaljenih in dinamičnih analiz MKE, analiz trkov itn. Prikazan je tudi postopek redukcije več, med seboj praktično neodvisnih ciljnih vrednosti, na enotno ciljno vrednost, ki je nato optimirana. Praktični zgled ponazarja uporabnost razvitega postopka.
Keywords:večkriterialno optimiranje, metode končnih elementov, topologija, genetski algoritmi, gradientni algoritmi
Publisher:Association of Mechanical Engineers and Technicians of Slovenia et al.
Year of publishing:2007
Number of pages:str. 657-666
Numbering:Letn. 53, št. 10
PID:20.500.12556/DKUM-52759 New window
UDC:629.3.018
ISSN on article:0039-2480
COBISS.SI-ID:10331419 New window
NUK URN:URN:SI:UM:DK:FHRLLMZB
Publication date in DKUM:10.07.2015
Views:1763
Downloads:67
Metadata:XML DC-XML DC-RDF
Categories:Misc.
:
GLAVAČ, Matej and REN, Zoran, 2007, Večkriterialno optimiranje avtomobilske konstrukcije z uporabo metode končnih elementov. Strojniški vestnik [online]. 2007. Vol. 53, no. 10, p. 657–666. [Accessed 24 March 2025]. Retrieved from: http://www.dlib.si/details/URN:NBN:SI:doc-TJ977GSN
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Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.]
ISSN:0039-2480
COBISS.SI-ID:762116 New window

Secondary language

Language:English
Title:Multicriterial optimization of a car structure using a finite-element method
Abstract:Motor-vehicle development tends to be supported by the use of computer-aided numerical methods in the early development phase. Prior to manufacturing the first prototype it is required to ensure the requested vehicle-life expectancy, the vehicle's behaviour in a collision, passenger comfort while driving, etc. The listed target values depend on many other influential parameters. The stresses occurring on the analyzed part are only one of the target values that need to be considered in the development stage. Automated processes for the optimization of the vehicle construction are often applied due to the complexity of modern numerical models. Today, the use of parametric FEM models makes it possible to identify and optimize the main parameters, such as the wall thickness of the construction and the topological changes of the surface. This paper explains the procedure for a multicriterial optimization of a car's structure, based on a systematic combination of commercial and non-commercial computer programs performing engineering analyses of car constructions with the FEM. The computer programs are upgraded with specially designed interfaces that enable automated communication. The optimization itself is based on genetic and gradient algorithms. The openness of the system enables the identification and optimization of parameters, which influence the target values and stem from different static FEM analyses, dynamic FEM analyses, collision analyses, etc. The reduction procedure for more independent target values to a single target value that is later optimized is also explained. The example illustrates the applicability of the developed procedure.
Keywords:multicriterial optimization, finite element methods, topology, genetic algorithms, gradient algorithms


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