Eigenvalue analysis for high telecommunication towers with lognormal stiffness by the response function method and SFEM

• Autorzy: Kamiński M. M. , Szafran J.
• Języki publikacji: EN

Abstrakty

EN

The main aim of this paper is to demonstrate the application of the generalized stochastic perturbation techniąue to model the lognormal random variables in structural mechanics. This is done to study probabilistic characteristics of the eigenvibrations for the high telecommunication towers with random stiffness, which are modeled as the linear elastic 3D trusses. The generalized perturbation technique based on the Taylor expansion is implemented using the Stochastic Finite Element Method in its Response Function version. The main difficulty here, in a comparison to this techniąue previous applications, is a necessity of both odd and even order terms inclusion in all the Taylor expansions. The hybrid numerical approach combines the traditional FEM advantages with the symbolic computing and its visualization power and it enables for a verification of probabilistic convergence of the entire computational procedure.

Słowa kluczowe

EN

stochastic dynamics; stochastic finite element method; response function method; stochastic perturbation technique

PL

dynamika stochastyczna; metoda stochastycznych elementów skończonych; stochastyczne zaburzenia

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Computer Assisted Mechanics and Engineering Sciences
• Rocznik: 2009
• Tom: Vol. 16, No. 3/4
• Strony: 279--290
• Opis fizyczny: Bibliogr. 10 poz., wykr.

Twórcy

autor

Kamiński M. M.

autor

Szafran J.

• Department of Steel Structures, Faculty of Cyvil Engineering, Architecture and Environmental Engineering Technical University of Łódź, AL Politechniki 6, 90-924 Łódź,

Bibliografia

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