Analysis of the sensitivity of a vibration-based procedure for structural identification |
| |
Authors: | J P Auzins A F Boyko |
| |
Affiliation: | (1) Riga Technical University (RTU), Riga, Latvia |
| |
Abstract: | We analyze the accuracy of estimation of structural component material properties (elastic modulus, Poisson’s ratio, density,
etc.) using the technique for measuring the eigenfrequencies of oscillations. The accuracy of frequency estimation using the
Fourier method and its influence on the final result are evaluated. Relationships between the errors in the frequency estimation
and those in the identified parameters are derived using the metamodel method. Application of the method is illustrated by
the example of a shell element with a stiffening rib.
__________
Translated from Problemy Prochnosti, No. 4, pp. 140–147, July–August, 2006. |
| |
Keywords: | sensitivity analysis structural identification eigenfrequencies metamodel |
本文献已被 SpringerLink 等数据库收录! |
|