EXPERIMENTAL ERROR EFFECTS IN PSEUDODYNAMIC TESTING

This paper considers the pseudodynamic test method to assess the inelastic dynamic behavior of structures subjected to seismic excitations. The error propagation characteristics of the numerical algorithm used for pseudodynamic testing must be studied in order to assess the reliability and error tolerance limits of the method. This paper presents the mathematical formulas characterizing the cumulative growth of experimental errors. Based on these formulas, the error-propogation characteristics of several integration algorithms currently used for pseudodynamic tests are examined and compared. The influence of the integration time step on the growth of cumulative errors is indicated, and a numerical procedure that minimizes error-propagation effects is identified. The results show the undesirability of certain systematic experimental errors that have hysteretic energy effects.

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  • Accession Number: 00494195
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: May 31 1990 12:00AM