Engineering Transactions, 49, 4, pp. 485–510, 2001
10.24423/engtrans.539.2001

Direct Stiffness Energy Model for a One-Dimensional Complex System

M.N. Ichchou
Laboratoire de Tribologie et Dynamique des Systemes Ecole Centrale de Lyon
France

L. Jezequel
Laboratoire de Tribologie et Dynamique des Systemes Ecole Centrale de Lyon
France

This paper deals with the high frequency analysis of one-dimensional waveguides. In this frequency range, this paper proposes a numerical implementation and tests of an alternative to the classical predictive dynamical methods. The originality of this approach consists in the fact that it is solely an energy density description. A numerical scheme very similar to the well-known direct stiffness method is employed here. This leads to a numerical code capable of predicting the mean value energy density for complex beam-like structure up to high frequencies. A twenty four components plane truss, including both the bending and extension motion is used as a verification test, and shows the ability of the proposed code to predict the high frequency dynamics of complex beam-like structures.
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Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).

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DOI: 10.24423/engtrans.539.2001