Derivation of mass and stiffness matrices from dynamic test data.A technique is described by which orthonormal modal vectors, computed from dynamic test response data, are used to derive mass, stiffness, and damping matrices for a discrete model of the distributed elastic system. Matrices thus computed from subsystems tests may be readily incorporated into larger system models. The method has been applied to a test of the Saturn V S-II stage LOX tank-engine support system. The dynamic responses of the discrete model are shown to correlate well with test data throughout the frequency range tested.
Document ID
19720041709
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Thoren, A. R. (Teledyne Brown Engineering Co. Huntsville, Ala., United States)
Date Acquired
August 6, 2013
Publication Date
April 1, 1972
Subject Category
Structural Mechanics
Report/Patent Number
AIAA PAPER 72-346
Meeting Information
Meeting: Structures, Structural Dynamics, and Materials Conference