A novel active squeeze film journal bearing actuated by high power piezoelectric transducers is developed aiming for non-contact suspension of axial rotating member with active error compensation and active axis positioning. A mathematical model based on acoustic radiation pressure theory is developed to predict the levitation force of the proposed bearing system. The levitation force model is then integrated into the model of the electro-mechanical system to describe the total dynamic behavior of the bearing system. Experimental results are carried out using a prototype system, which show good agreement with the calculation.
- Aerospace Division
Development of an Active Squeeze Film Journal Bearing Using High Power Ultrasonic Transducers
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Zhao, S, & Mojrzisch, S. "Development of an Active Squeeze Film Journal Bearing Using High Power Ultrasonic Transducers." Proceedings of the ASME 2009 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Volume 2: Multifunctional Materials; Enabling Technologies and Integrated System Design; Structural Health Monitoring/NDE; Bio-Inspired Smart Materials and Structures. Oxnard, California, USA. September 21–23, 2009. pp. 195-202. ASME. https://doi.org/10.1115/SMASIS2009-1244
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