contributor author | J. L. Beck | |
contributor author | L. S. Katafygiotis | |
date accessioned | 2017-05-08T22:38:39Z | |
date available | 2017-05-08T22:38:39Z | |
date copyright | April 1998 | |
date issued | 1998 | |
identifier other | %28asce%290733-9399%281998%29124%3A4%28455%29.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/84781 | |
description abstract | The problem of updating a structural model and its associated uncertainties by utilizing dynamic response data is addressed using a Bayesian statistical framework that can handle the inherent ill-conditioning and possible nonuniqueness in model updating applications. The objective is not only to give more accurate response predictions for prescribed dynamic loadings but also to provide a quantitative assessment of this accuracy. In the methodology presented, the updated (optimal) models within a chosen class of structural models are the most probable based on the structural data if all the models are equally plausible a priori. The prediction accuracy of the optimal structural models is given by also updating probability models for the prediction error. The precision of the parameter estimates of the optimal structural models, as well as the precision of the optimal prediction-error parameters, can be examined. A large-sample asymptotic expression is given for the updated predictive probability distribution of the uncertain structural response, which is a weighted average of the predictive probability distributions for each optimal model. This predictive distribution can be used to make model predictions despite possible nonuniqueness in the optimal models. | |
publisher | American Society of Civil Engineers | |
title | Updating Models and Their Uncertainties. I: Bayesian Statistical Framework | |
type | Journal Paper | |
journal volume | 124 | |
journal issue | 4 | |
journal title | Journal of Engineering Mechanics | |
identifier doi | 10.1061/(ASCE)0733-9399(1998)124:4(455) | |
tree | Journal of Engineering Mechanics:;1998:;Volume ( 124 ):;issue: 004 | |
contenttype | Fulltext | |