NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
NASTRAN forced vibration analysis of rotating cyclic structuresTheoretical aspects of a new capability, developed and added to the general purpose finite element program NASTRAN Level 17.7, to conduct forced vibration analysis of turned cyclic structures rotating about their axis of symmetry, are presented. The effects of Coriolis and centripetal accelerations as well as those due to the translational acceleration of the axis of rotation, are included. The equations of motion are first derived for an arbitrary grid point of the cyclic sector finite element model and then extended for the complete model. The equations are solved by four principal steps: (1) transformation of applied loads at frequency-dependent circumferential harmonic components; (2) application of circumferential harmonic-dependent intersegment compatibility constraints; (3) solution of frequency-dependent circumferential harmonic components of displacements; and (4) recovery of frequency-dependent response in various segments of the total structure. Five interrelated examples are presented to illustrate the various features of the development.
Document ID
19840046316
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Elchuri, V.
(Textron Bell Aerospace Co. Buffalo, NY, United States)
Smith, G. C. C.
(Textron Bell Aerospace Co. Buffalo, NY, United States)
Gallo, A. M.
(Bell Aerospace Textron Buffalo, NY, United States)
Date Acquired
August 12, 2013
Publication Date
September 1, 1983
Subject Category
Structural Mechanics
Report/Patent Number
ASME PAPER 83-DET-20
Accession Number
84A29103
Funding Number(s)
CONTRACT_GRANT: NAS3-22533
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available