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Influence of rubbing on rotor dynamics, part 1The results of analytical and experimental research on rotor-to-stationary element rubbing in rotating machines are presented. A characterization of physical phenomena associated with rubbing, as well as a literature survey on the subject of rub is given. The experimental results were obtained from two rubbing rotor rigs: one, which dynamically simulates the space shuttle main engine high pressure fuel turbopump (HPFTP), and the second one, much simpler, a two-mode rotor rig, designed for more generic studies on rotor-to-stator rubbing. Two areas were studied: generic rotor-to-stator rub-related dynamic phenomena affecting rotating machine behavior and applications to the space shuttle HPFTP. An outline of application of dynamic stiffness methodology for identification of rotor/bearing system modal parameters is given. The mathematical model of rotor/bearing/seal system under rub condition is given. The computer program was developed to calculate rotor responses. Compared with experimental results the computed results prove an adequacy of the model.
Document ID
19890016092
Document Type
Contractor Report (CR)
Authors
Muszynska, Agnes
(Bently Rotor Dynamics Research Corp. Minden, NV, United States)
Bently, Donald E.
(Bently Rotor Dynamics Research Corp. Minden, NV, United States)
Franklin, Wesley D.
(Bently Rotor Dynamics Research Corp. Minden, NV, United States)
Hayashida, Robert D.
(Bently Rotor Dynamics Research Corp. Minden, NV, United States)
Kingsley, Lori M.
(Bently Rotor Dynamics Research Corp. Minden, NV, United States)
Curry, Arthur E.
(Bently Rotor Dynamics Research Corp. Minden, NV, United States)
Date Acquired
September 6, 2013
Publication Date
March 1, 1989
Subject Category
Mechanical Engineering
Report/Patent Number
NASA-CR-183648-PT-1
NAS 1.26:183648-PT-1
Funding Number(s)
CONTRACT_GRANT: NAS8-36719
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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