A Statistical Analysis of Space Structure Mode Localization.

Abstract

Cyclic structures, such as antenna arrays, multi-bay trusses, and compressor blades, are significantly impacted by slight changes to system periodicity. Manufacturing errors of 5% or less can result in drastic changes to a structure's modal behavior. This change in modal behavior is significant, since it may result in the focusing of modal energy to individual substructures of the system. Poor modal identification can result in poorly designed control systems, resulting in shape control and pointing issues for space antennae. Additionally, modal energy localization may damage individual system components due to unanticipated levels of cyclic loading, leading to high cycle fatigue.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1999
Accession Number
ADA361557

Entities

People

  • Amy M. Cox

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Sensors
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force Research Laboratories
  • Computational Science
  • Computers
  • Control Systems
  • Couplings
  • Crystal Structure
  • Data Acquisition
  • Data Science
  • Energy
  • Graphical User Interface
  • Information Science
  • Materials
  • Monte Carlo Method
  • Quality Control
  • Simulations
  • Statistical Analysis
  • User Interface

Readers

  • Robotics and Automation.
  • Structural Dynamics.

Technology Areas

  • Space