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A computer package for the design and eigenproblem solution of damped linear multidegree of freedom systemsSystems described by the matrix differental equation are considered. An interactive design routine is presented for positive definite mass, damping, and stiffness matrices. Designing is accomplished by adjusting the mass, damping, and stiffness matrices to obtain a desired oscillation behavior. The algorithm also features interactively modifying the physical structure of the system, obtaining the matrix structure and a number of other system properties. In case of a general system, where the M, C, and K matrices lack any special properties, a routine for the eigenproblem solution of the system is developed. The latent roots are obtained by computing the characteristic polynomial of the system and solving for its roots. The above routines are prepared in FORTRAN IV and prove to be usable for the machines with low core memory.
Document ID
19820025888
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ahmadian, M.
(State Univ. of New York Buffalo, NY, United States)
Inman, D. J.
(State Univ. of New York Buffalo, NY, United States)
Date Acquired
August 10, 2013
Publication Date
October 1, 1982
Publication Information
Publication: NASA. Langley Research Center Res. in Struct. and Solid Mech., 1982
Subject Category
Structural Mechanics
Accession Number
82N33764
Funding Number(s)
CONTRACT_GRANT: NSF MEA-81-12826
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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