On structural modelling of rotor configurations

Arunkumar, V (1989) On structural modelling of rotor configurations. In: 9th International Symposium on Air Breathing Engines, 03-08 Sep 1989, Athens, Greece.

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Abstract

A simple method for designing models of complex shaft configurations for advanced fluid powered systems is presented. Using this method, a highly complex rotor-bearing configuration can be suitably scaled down to be tested for performance at the laboratory levels, keeping the same nondimensional speed and undamped/damped mode shapes between the prototype and the model. The modeling procedure takes into account the coupling, gyroscopic effects, external damping provided by fluid film dampers, and nonshaft masses that are likely to be present in the prototype. An example showing the similarity in the first two mode shapes and the critical speeds between the prototype and the model is presented.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Bearings;Rotors;Shafts(machine elements);Structural design; Damping;Gas turbines;Prototypes
Subjects: ENGINEERING > Mechanical Engineering
Division/Department: Propulsion Division
Depositing User: shankar sk nadoor
Date Deposited: 03 Nov 2006
Last Modified: 24 May 2010 09:52
URI: http://nal-ir.nal.res.in/id/eprint/3148

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