NUMERICAL FOURIER TRANSFORM IN RANDOM VIBRATION

THE STOCHASTIC STRUCTURAL DYNAMIC ANALYSIS FOR COMPLEX STRUCTURES DEMANDS AN ANALYTICAL TREATMENT INVOLVING NONSTATIONARY STOCHASTIC PROCESSES, UNDER NONSTATIONARY GUSTY WINDS OR EARTHQUAKE ACCELERATIONS. IT IS EMPHASIZED THAT THE FREQUENCY DOMAIN ANALYSIS OF SUCH NONSTATIONARY PROBLEMS WITH THE AID OF THE FOURIER TRANSFORM TECHNIQUE IS OF VITAL IMPORTANCE IN EVALUATING THE MEAN VALUE AND THE COVARIANCE FUNCTION OF THE RESPONSE, WHICH ARE CLOSELY RELATED TO STRUCTURAL SAFETY. AN EFFICIENT METHOD OF NUMERICAL SINGLE AND DOUBLE FOURIER TRANSFORM AND INVERSION WITH THE AID OF THE COMPEX FOURIER SERIES TECHNIQUE COUPLED WITH THE COOLEY/TUKEY ALGORITHM FOR EVALUATION OF THE FOURIER COEFFICIENTS IS PRESENTED. NUMERICAL EXAMPLES INDICATE THAT THE NUMERICAL INVERSION CAN BE PERFORMED WITHIN A REASONABLE TIME ON AN IBM 7094. /AUTHOR/

  • Availability:
  • Supplemental Notes:
    • Vol 95, No EM3, PROC PAPER 6629, PP 731-746
  • Authors:
    • YANG, J
    • Shinozuka, M
  • Publication Date: 1969-6

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00209054
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 29 1994 12:00AM