Accession Number:

ADA361557

Title:

A Statistical Analysis of Space Structure Mode Localization.

Descriptive Note:

Master's thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH

Personal Author(s):

Report Date:

1999-03-01

Pagination or Media Count:

270.0

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 structures 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.

Subject Categories:

  • Electrical and Electronic Equipment
  • Statistics and Probability

Distribution Statement:

APPROVED FOR PUBLIC RELEASE