A Modal Analysis and Modelling of a Lightly Damped Large Space Structure

Abstract

This study involves the modification to the PACOSS Dynamic Test Article to create a lightly damped representative large space structure with closely spaced, low frequency modes. An experimental modal analysis is performed to recharacterize the low frequency flexible vibration modes. A finite element model is created using MSC/NASTRAN to predict low frequency behavior using both real eigenvalue analysis and frequency response analysis. Then a reduced order model is created and fine-tuned to represent the dynamics of the structure for the identified low frequency modes.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1992
Accession Number
ADA256566

Entities

People

  • Scott E. George

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Control Systems
  • Dynamic Response
  • Eigenvalues
  • Engineering
  • Equations
  • Experimental Data
  • Finite Element Analysis
  • Frequency
  • Frequency Response
  • Large Space Structures
  • Measurement
  • Modal Analysis
  • Resonant Frequency
  • Solar Panels
  • Space Systems
  • Transfer Functions

Readers

  • Computational Modeling and Simulation
  • Structural Dynamics.

Technology Areas

  • Space
  • Space - Orbital Debris