Comparison of the Aluminium Versus Steel Telecommunication Towers in Stochastic Finite Element Method Eigenvibrations Analysis




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Wydawnictwo Politechniki Łódzkiej ; Katedra Dynamiki Maszyn - Wydział Mechaniczny Politechniki Łódzkiej
Lodz University of Technology Press ; Department Division of Dynamics - Faculty of Mechanical Engineering


The main aim of this paper is to make a comparison of the eigenfrequencies of the high telecommunication towers alternatively manufactured using the stainless steel and the aluminium components. It is provided each time assuming that the Young modulus of the applied material· is the Gaussian input random variable and using the generalized stochastic perturbation method using the global version of the Response Function Method. Up to the fourth order probabilistic moments and characteristics are computed in the three dimensional Finite Element Method model of the tower composed from the continuous linear elastic edge beams spanned by the large number of the linear elastic bars. A computational part of the work is made using the hybrid usage of the computer algebra system MAPLE and the FEM engineering package ROBOT used widely in the civil engineering practice.


Słowa kluczowe

stochastic dynamics, stochastic finite element method, response function method, stochastic perturbation technique, dynamika stochastyczna, metoda stochastycznych elementów skończonych, metoda funkcji odpowiedzi, technika zaburzeń stochastycznych


Mechanics and Mechanical Engineering, Vol. 15, No. 2, 2011, s. 101-116