Statistical System Identification of Structures

by James L. Beck, California Inst of Technology, United States,

Document Type: Proceeding Paper

Part of: Structural Safety and Reliability


A general unifying approach to system identification is presented within a Bayesian statistical framework to explicitly treat the inherent uncertainties. It is shown that selecting the most probable model from a class of models for a structure based on its measured input and output leads to a rational and computationally feasible approach for response prediction. It is also asymptotically correct as the sample size is increased. The methodology is illustrated using an output-error formulation which has been successfully applied to recorded seismic motions from structures.

Subject Headings: Computer models | Structural models | Dynamic structural analysis | Probability | Statistics | Structural systems | Bayesian analysis | Frames

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