NDLI: Development of a probabilistic component mode synthesis method for the analysis of non-deterministic substructures

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Development of a probabilistic component mode synthesis method for the analysis of non-deterministic substructures

Content Provider	NASA Technical Reports Server (NTRS)
Author	Brown, Andrew M. Ferri, Aldo A.
Copyright Year	1995
Description	Standard methods of structural dynamic analysis assume that the structural characteristics are deterministic. Recognizing that these characteristics are actually statistical in nature, researchers have recently developed a variety of methods that use this information to determine probabilities of a desired response characteristic, such as natural frequency, without using expensive Monte Carlo simulations. One of the problems in these methods is correctly identifying the statistical properties of primitive variables such as geometry, stiffness, and mass. This paper presents a method where the measured dynamic properties of substructures are used instead as the random variables. The residual flexibility method of component mode synthesis is combined with the probabilistic methods to determine the cumulative distribution function of the system eigenvalues. A simple cantilever beam test problem is presented that illustrates the theory.
File Size	625993
Page Count	9
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19960050068
Archival Resource Key	ark:/13960/t0ps2qc1s
Language	English
Publisher Date	1995-01-01
Access Restriction	Open
Subject Keyword	Structural Mechanics Dynamic Structural Analysis Substructures Mean Structural Design Dynamic Characteristics Structural Failure Cantilever Beams Flexibility Resonant Frequencies Statistical Distributions Eigenvalues Stiffness Random Variables Distribution Functions Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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