System identification structural dynamics: An application to wind force estimation
Abstract
A second order nonlinear dynamic programming filter developed to inexpensively handle large order linear dynamical system is applied to the wind force identification problem. The differential equations governing the along wind buffering of multistory structures by gusts are formulated. The floor level acceleration response power spectral density (PSD) matrices are derived in terms of PSD models for wind gusts. A detailed first order sensitivity analysis of the derived auto-PSD models is performed with respect to some unknown stucture and gust model paramters. Using a simulated and noise polluted version of an auto-acceleration PSD data, some of the unknown stuctural and gust parameters are identified using a Monte Carlo version of the recursive nonlinear dynamic programming filter in the frequency domain. Ambient vibration experimental considerations are discussed.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1979
- Bibcode:
- 1979PhDT.......126S
- Keywords:
-
- Dynamic Programming;
- Dynamic Structural Analysis;
- Nonlinear Filters;
- Wind Pressure;
- Buildings;
- Estimating;
- Gust Loads;
- Linear Systems;
- Power Spectra;
- Engineering (General)