Accession Number : AD0756389

Title :   Research on Structural Dynamic Testing by Impedance Methods. Volume I. Structural System Identification from Multipoint Excitation.

Descriptive Note : Final rept.,

Corporate Author : KAMAN AEROSPACE CORP BLOOMFIELD CONN

Personal Author(s) : Flannelly,William G. ; Berman,Alex ; Giansante,Nicholas

Report Date : NOV 1972

Pagination or Media Count : 151

Abstract : The report is presented in four volumes, each describing a separate phase of the basic theory of structural dynamic testing using impedance techniques. Volume I presents the results of an analytical and numerical investigation of the practicality of system identification using fewer measurement points than there are degrees of freedom. The parameters in Lagrange's equations of motion, mass, stiffness, and damping for a mathematical model having fewer degrees of freedom than the linear elastic structure it represents may be determined directly from measured mobility data. (Author)

Descriptors :   (*STRUCTURAL PROPERTIES, MATHEMATICAL MODELS), (*HELICOPTERS, STRUCTURAL PROPERTIES), RESPONSE, EQUATIONS OF MOTION, DAMPING, COMPUTER PROGRAMS, MATRICES(MATHEMATICS), IDENTIFICATION SYSTEMS, LINEAR SYSTEMS, NUMERICAL ANALYSIS

Subject Categories : Helicopters
      Computer Programming and Software
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE