Constrained Stiffness Matrix Adjustment Using Mode Data.

Abstract

A procedure is introduced that uses, in addition to mode data, structural connectivity information to optimally adjust deficient stiffness matrices. The adjustments are performed such that the percentage change to each stiffness coefficient is minimized. The physical configuration of the analytical model is preserved, and the adjusted model will reproduce exactly the modes used in the identification. The theoretical development is presented, and the procedure is demonstrated by numerical simulation of a test problem. (Author).

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Document Details

Document Type
Technical Report
Publication Date
Aug 15, 1984
Accession Number
ADA155988

Entities

People

  • A. M. Kabe

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Agreements
  • Air Force
  • Applied Mechanics
  • Classification
  • Coefficients
  • Corporations
  • Dynamic Response
  • Eigenvalues
  • Equations
  • Frequency
  • Identification
  • Resonant Frequency
  • Security
  • Shape
  • Simulations
  • Stiffness
  • Vibration

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Economics
  • Structural Dynamics.