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Component mode synthesis and large deflection vibrations of complex structuresThe accuracy of the NASTRAN modal synthesis analysis was assessed by comparing it with full structure NASTRAN and nine other modal synthesis results using a nine-bay truss. A NASTRAN component mode transient response analysis was also performed on the free-free truss structure. A finite element method was developed for nonlinear vibration of beam structures subjected to harmonic excitation. Longitudinal deformation and inertia are both included in the formula. Tables show the finite element free vibration results with and without considering the effects of longitudinal deformation and inertia as well as the frequency ratios for a simply supported and a clamped beam subjected to a uniform harmonic force.
Document ID
19840010612
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Mei, C. (Old Dominion Univ. Norfolk, VA, United States)
Date Acquired
September 4, 2013
Publication Date
February 1, 1984
Subject Category
Structural Mechanics
Report/Patent Number
NASA-CR-173338
NAS 1.26:173338
Accession Number
84N18680
Funding Number(s)
CONTRACT_GRANT: NAG1-301
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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