Accession Number:

ADA091459

Title:

Determination of Modal Parameters from Experimental Frequency Response Data.

Descriptive Note:

Master's thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Personal Author(s):

Report Date:

1978-12-01

Pagination or Media Count:

137.0

Abstract:

In recent years, a number of advances have been made in determining the dynamic properties of a structure. These advances have opened the field of modal analysis, the term used to describe the use of experimental frequency response data to determine the modal properties of natural frequencies, damping ratios, and mode shapes. One of the main problems in the area of modal analysis is the lack of complete documentation for the techniques in use. The purpose of this thesis is to investigate some of the modal analysis techniques in use, and to document, fully, the assumptions and the equations and computer algorithms associated with each method. Three curve fitting techniques are presented along with some example problems which demonstrate the limitations of each method. Author

Subject Categories:

  • Numerical Mathematics
  • Structural Engineering and Building Technology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE