Statistical Analysis of Space Structure Mode Localization

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.Air Force Inst of Tech Wright-Patterson AFB OH is the author of 'Statistical Analysis of Space Structure Mode Localization', published 1999 under ISBN 9781423546665 and ISBN 1423546660.