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Nonlinear vibrations produced by unbalanced motors

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Autor: González Carbajal, Javier
Director: García Vallejo, Daniel
Domínguez Abascal, Jaime
Departamento: Universidad de Sevilla. Departamento de Ingeniería Mecánica y de Fabricación
Fecha: 2017-03-15
Tipo de documento: Tesis Doctoral
Resumen: The present thesis is concerned with the nonlinear dynamics of vibrating systems excited by unbalanced motors. The main focus is the reciprocal (nonideal) interaction which in general exists between the dynamics of the exciter –the unbalanced motor– and that of the vibrating system. Two models were analytically and numerically studied. First, a 2DoF model of a general structure with a cubic nonlinearity, excited by a nonideal motor, was analysed in detail. The second model is a 3DoF simplified representation of the process of vibrocompaction of quartz agglomerates. The first model requires different treatments depending on the order of magnitude of the slope of the motor characteristics. Then, two cases were considered separately: large and small slope. For the first scenario, a new analytical approach was developed, which combines two well – known perturbation techniques: the Averaging Method and the Singular Perturbation Theory. This scheme allows uncovering the system dy...
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Cita: Gonzalez Carbajal, J. (2017). Nonlinear vibrations produced by unbalanced motors. (Tesis Doctoral Inédita). Universidad de Sevilla, Sevilla.
Tamaño: 3.475Mb
Formato: PDF


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