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Analytical and experimental vibration and buckling characteristics of a pretensioned stayed columnModal vibration tests to determine lateral modes of vibration of a stayed column and static axial compression tests to determine the column's buckling and postbuckling behavior have been performed. Effects of stay tension levels and vibration-load interaction are presented. Two finite element models are used to analyze the column, a three-dimensional frame using NASTRAN and an equivalent two-dimensional frame using an exact dynamic stiffness matrix. Both analyses correlated well with the linear vibration and buckling experimental data. Results indicate premature buckling of the column due to vibration-load interaction and nonlinear oscillations due to stay slackening. Postbuckling behavior of the column is unusual because of stay slackening and results in a postbuckling restoring force of less than the bifurcation buckling load. Guidelines for design of pretensioned structures are presented which consider buckling, postbuckling and vibration behavior.
Document ID
19820046587
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Belvin, W. K.
(NASA Langley Research Center Structures and Dynamics Div., Hampton, VA, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1982
Subject Category
Structural Mechanics
Report/Patent Number
AIAA PAPER 82-0775
Meeting Information
Meeting: In: Structures, Structural Dynamics and Materials Conference
Location: New Orleans, LA
Start Date: May 10, 1982
End Date: May 12, 1982
Accession Number
82A30122
Distribution Limits
Public
Copyright
Other

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