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Real eigenvalue analysis in NASTRAN by the tridiagonal reduction (FEER) methodImplementation of the tridiagonal reduction method for real eigenvalue extraction in structural vibration and buckling problems is described. The basic concepts underlying the method are summarized and special features, such as the computation of error bounds and default modes of operation are discussed. In addition, the new user information and error messages and optional diagnostic output relating to the tridiagonal reduction method are presented. Some numerical results and initial experiences relating to usage in the NASTRAN environment are provided, including comparisons with other existing NASTRAN eigenvalue methods.
Document ID
19770013549
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Newman, M.
(Analytical Mechanics Assoc., Inc. Hampton, VA, United States)
Flanagen, P. F.
(Analytical Mechanics Assoc., Inc.)
Rogers, J. L., Jr.
(NASA Langley Research Center)
Date Acquired
August 8, 2013
Publication Date
October 1, 1976
Publication Information
Publication: NASTRAN" User's Experiences
Subject Category
Structural Mechanics
Accession Number
77N20493
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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