Wyniki wyszukiwania dla: ULTRASONIC LEVITATION

• Search for the most useful geometry of an acoustic journal bearing

  Publikacja

  • R. Gawarkiewicz

  - TRIBOLOGIA - Rok 2017

  Computer simulations of a number of journal bearing’s geometries utilising acoustic levitation were carried out. The choice of the best geometry depended on the ability of a deformed shape, created by piezo-electric elements, to facilitate squeeze film ultrasonic levitation, and also to create three evenly distributed diverging aerodynamic gaps. Deformations of analysed variants of the bearing’s shape were generated by numerical...

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• Running performance of an aerodynamic journal bearing with squeeze film effect

  Publikacja

  • T. Stolarski

  - INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES - Rok 2013

  Results of theoretical and experimental studies concerning the performance of an aerodynamic journal bearing of which running is assisted by squeeze film ultrasonic levitation (SFUL) are presented in this paper. The SFUL mechanism not only can separate journal from the bearing at the start and stop phases of operation but also can significantly contribute to the dynamic stability of the bearing when it runs at speed. Computer calculations...

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