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Probabilistic component mode synthesis of nondeterministic substructures
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Brown, Andrew M. Ferri, Aldo A. |
| Copyright Year | 1996 |
| 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. We present 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 | 505461 |
| Page Count | 6 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19970025514 |
| Archival Resource Key | ark:/13960/t0rr6s87z |
| Language | English |
| Publisher Date | 1996-04-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Dynamic Structural Analysis Substructures Structural Design Statistical Distributions Probability Theory Eigenvalues Stiffness Random Variables Monte Carlo Method Flexibility 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 | Article |
