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Internal Friction And Instabilities Of Rotors (1992)

Dill, J. ; Walton, J. ; Zorzi, E. ; [et al.]

In: Other Sources

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Publication Date: 2019-07-12

Description: Report describes study of effects of internal friction on dynamics of rotors prompted by concern over instabilities in rotors of turbomachines. Theoretical and experimental studies described. Theoretical involved development of nonlinear mathematical models of internal friction in three joints found in turbomachinery - axial splines, Curvic(TM) splines, and interference fits between smooth cylindrical surfaces. Experimental included traction tests to determine the coefficients of friction of rotor alloys at various temperatures, bending-mode-vibration tests of shafts equipped with various joints and rotordynamic tests of shafts with axial-spline and interference-fit joints.

Keywords: MACHINERY

Type: MFS-27246 , NASA Tech Briefs (ISSN 0145-319X); 16; 6; P. 78

Format: text

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