Accession Number : ADA312408

Title :   Frequency Domain Structural Identification.

Descriptive Note : Masters's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Johnson, Richard

PDF Url : ADA312408

Report Date : JUN 1996

Pagination or Media Count : 162

Abstract : The Structural Synthesis Transformation is used to conduct structural system identification in the frequency domain. For spatially complete where each of the frequency response functions at every degree of freedom of each of the coordinates of the modeled system are available it shown that the theory exactly identifies all modeling errors. For spatially incomplete cases where the frequency response functions are available only at a proper subset of the degrees of freedom of the finite element model, single mode solutions are computed over intervals about modes of the experimental system using matrices and complex valued line integrals. Methods of forming multiple mode solutions from the single mode solutions are explored.

Descriptors :   *FINITE ELEMENT ANALYSIS, *STRUCTURAL ANALYSIS, MATHEMATICAL MODELS, MATRICES(MATHEMATICS), STRUCTURAL MECHANICS, BEAMS(STRUCTURAL), DYNAMIC RESPONSE, STIFFNESS, DAMPING, THESES, EIGENVALUES, DEGREES OF FREEDOM, STRUCTURAL RESPONSE, APPROXIMATION(MATHEMATICS), ERROR ANALYSIS, NUMERICAL INTEGRATION, SYSTEMS ANALYSIS, FREQUENCY DOMAIN, FREQUENCY RESPONSE, INTEGRAL TRANSFORMS.

Subject Categories : Mechanics
      Operations Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE