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Two Degrees of Freedom Non-linear Model to Study the Automobile’s Vibrations

Author(s): Nicolae–Doru Stănescu

Journal: Analele Universităţii Eftimie Murgu Reşiţa. Fascicula de Inginerie
ISSN 1453-7397

Volume: XVII;
Issue: 1;
Start page: 133;
Date: 2010;
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Keywords: non-linear | vibrations | stability | automobile

In this paper we present a non-linear model for the study of an automobile's vibrations. The model has two degrees of freedom and it is highly non-linear. The forces in the springs are considered to be given by a polynomial potential. The equations of motion are obtained using the Lagrange second order equations. We determined the equilibrium positions. We proved the conditions for the uniqueness of the equilibrium. In our paper we studied the stability of the equilibrium and the stability of the motion. Finally a numerical application is presented.
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