Abstract
Rolling bearing noise has become an aspect of increasing importance for the performance of rotating machinery, like electric motors and gearboxes. Generally, two aspects are important with regard to bearing noise, i.e. the transmission characteristics and the vibration generation characteristics. A potential source of vibrations are for example manufacturing imperfections of the different bearing components. Damping of bearing vibrations is enhanced by the lubrication film between the rolling elements and the raceway of the bearing. Regarding vibrations of the total application, the reduction of vibration transmission can be increased by applying a constrained viscoelastic layer between the bearing and the housings. To design an effective damping layer a 3D nonlinear time dependent computational model is developed to simulate the dynamic behaviour of a ball bearing application. The bearing model incorporates the stiffness and damping properties of the lubricant. Flexible components including the viscoelastic layer are modelled with FEM and reduced with a Component Mode Synthesis technique. Viscoelasticity is described both in the time and frequency domain by a generalized Maxwell model. The model is validated experimentally using constrained damping layer samples. Results are shown for a typical ball bearing application, showing that a proper design and material selection of the constrained layer is important for the reduction of the overall vibrations of the application.
Original language | English |
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Title of host publication | Proceedings of IMAC-XIX : a conference on structural dynamics |
Subtitle of host publication | February 5-8, 2001, Hyatt Orlando, Kissimmee, Florida |
Editors | Alfred L. Wicks |
Place of Publication | Bethel, CT |
Publisher | Society for Experimental Mechanics |
Pages | 130-136 |
Number of pages | 7 |
ISBN (Print) | 9780912053721 |
Publication status | Published - 5 Feb 2001 |
Event | 19th International Modal Analysis Conference, IMAC 2001 - Hyatt Orlando, Kissimmee, United States Duration: 5 Feb 2001 → 8 Feb 2001 Conference number: 19 |
Conference
Conference | 19th International Modal Analysis Conference, IMAC 2001 |
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Abbreviated title | IMAC XIX |
Country/Territory | United States |
City | Kissimmee |
Period | 5/02/01 → 8/02/01 |
Keywords
- METIS-203778
- IR-58805