Evolutionary algorithm in identification of stochastic parameters ot laminates

• Autorzy: Orantek P. , Beluch W. , Burczyński T.
• Konferencja: Evolutionary Computation and Global Optimization 2008 / National Conference (11 ; 2-4.06.2008 ; Szymbark, Poland)
• Języki publikacji: EN

Abstrakty

EN

The paper deals with the identification of material constants in multi-layered composites. Simple and hybrid (with laminas made of different materials) laminates are considered. Material constants are presented in a stochastic form to model their uncertainty. The Evolutionary Algorithm based on such representation of the data is used as the global optimization method. Chromosomes are represented by multidimensional random vectors consisting of random genes in the form of independent random variables with the Gaussian density probability functions. The Stochastic optimization problem is replaced by a deterministic one by evolutionary computing of chromosomes having genes consisting of mean values and standard deviations. Modal analysis methods are employed to collect measurement data necessary for the identification. The Finite Element Method in Stochastic version is used to solve the boundary-value problem for laminates. Numerical examples showing efficiency of the method are presented.

Słowa kluczowe

EN

evolutionary algorithm; EA; stochastic parameters; laminate; composite materials

PL

algorytm ewolucyjny; parametry stochastyczne; laminat; kompozyty

• Wydawca: Oficyna Wydawnicza Politechniki Warszawskiej
• Czasopismo: Prace Naukowe Politechniki Warszawskiej. Elektronika
• Rocznik: 2008
• Tom: z. 165
• Strony: 165--172
• Opis fizyczny: Bibliogr. 11 poz., tab., wykr.

Twórcy

autor

Orantek P.

autor

Beluch W.

autor

Burczyński T.

• Department for Strength of Materials and Computational Mechanics, Silesian University of Technology, Konarskiego 18a, 44-100 Gliwice,

Bibliografia

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• [3] Bargiela, A., and Pedrycz, W. Gramilar Computing: An introduction. Kluwer Academic Publishers Boston/Dordrecht/London, 2002.
• [4] Beluch, W., Burczyński, T., and Orantek, P. Evolutionary Identification of Fuzzy Material Constants in Laminates. Evolutionary Computation and Global Optimization 2007, Oficyna Wyd. Pol. Warszawskiej, Prace Naukowe, Elektronika, z. 160, (Ed. J. Arabas), Warszawa, pages 17-24, 2007.
• [5] Beluch, W., Burczyński, T., and Orantek, P. The fuzzy strategy in identification of laminates elastic constants. Full papers. Computer Methods in Mechanics CMM-2007, Spała, 2007, CD-ROM.
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• [7] Burczyński, T. and Orantek, P. The evolutionary algorithm in stochastic optimization and identification problems. Evolutionary computation and global optimization 2006, ed. J. Arabas, Oficyna Wydawnicza Politechniki Warszawskiej, pages 309-320, Warszawa 2006.
• [8] German J., The basics of the fibre-reinforced composites mechanics. Publ. of the Cracow University of Technology, Cracow, Poland, 2001 (in Polish).
• [9] Kleiber, M. and Hien, T.D. The Stochastic Finite Element Method. John Wiley & Sons, 1992.
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