Investigation of nonlinear rotor system dynamics
Tutor / director / evaluadorNeilson, D.
Tipo de documentoProyecto/Trabajo final de carrera
Condiciones de accesoAcceso restringido por acuerdo de confidencialidad
Rotor systems with clearances can exhibit chaotic motion. Previous work has shown that the embedding space method and correlation dimension estimation can be used to give an indication of the clearance. However some problems were found using this method. The aim of this project is to repeat some of the results as a test case and then to compare the results with a different dynamic system which may show the same type of response. The system is made up of two masses connected by a massless bar. The bar is able to contact a spring at some point along its length. This system replicates some of the features of the rotor system but in a different system. The system is modelled with two second-order ordinary differential equations. By employing various analysis techniques comparison is made between the results obtained from two different systems. Both systems present a periodic motion, varying between period one and period two motion depending on the value of various system parameters. These show that the response of the system is sensitive to certain changes in these parameters although chaos never exists.
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