On numerical simulations of a nonlinear self-excited system with two non-ideal sources

Trabalho apresentado em evento

Fecha

2005-12-01

Registro en:

Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference - DETC2005, v. 6 B, p. 823-827.

http://hdl.handle.net/11449/68551

10.1115/DETC2005-84756

2-s2.0-33244480133

http://repositorioslatinoamericanos.uchile.cl/handle/2250/3918082

Autor

Universidade Regional Integrada do Alto Uruguai e das Missões

Universidade de São Paulo (USP)

Universidade Estadual Paulista (Unesp)

Technical University of Lubin

Institución

Universidade Paulista Júlio de Mesquita Filho (Brasil)

Resumen

In this work, the dynamic behavior of self-synchronization and synchronization through mechanical interactions between the nonlinear self-excited oscillating system and two non-ideal sources are examined by numerical simulations. The physical model of the system vibrating consists of a non-linear spring of Duffing type and a nonlinear damping described by Rayleigh's term. This system is additional forced by two unbalanced identical direct current motors with limited power (non-ideal excitations). The present work mathematically implements the parametric excitation described by two periodically changing stiffness of Mathieu type that are switched on/off. Copyright © 2005 by ASME.

Materias

Mechanical interactions

Damping

Parametric oscillators

Stiffness

Synchronization

Vibration measurement

Nonlinear systems

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