Multi-Shaker Random Mode Testing.

Abstract

A mode survey test procedure that combines multi-shaker correlated broad-band random excitation of the test article with the mode isolation features of multiple shaker excitation. The procedure takes advantage of multiple shaker excitation to best isolate the target mode response from all other modes. Mode parameters are then established from direct observation of frequency response functions. The proposed test procedure derives from the recognition that response data of a structure, excited at multiple locations by proportional randomly varying forces, can be analyzed such that the results are equivalent to those obtained had the excitation been harmonic. The test procedure is described in detail and demonstrated by analytical simulation. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 30, 1984
Accession Number
ADA142094

Entities

People

  • A. M. Kabe

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Control Systems
  • Data Processing Equipment
  • Engineering
  • Equations
  • Excitation
  • Frequency
  • Frequency Response
  • Identification
  • Measurement
  • Modal Analysis
  • Nomenclature
  • Observation
  • Phase Distortion
  • Processing Equipment
  • Resonant Frequency
  • Simulations
  • Spacecraft

Readers

  • Acoustics.
  • Statistical inference.