Parameter uncertainties quantification for finite element based subspace fitting approaches

摘要: This paper addresses the issue of quantifying uncertainty bounds when updating finite element model a mechanical structure from measurement data. The problem arises as to assess validity parameters identification and accuracy results obtained. In this paper, covariance estimation procedure is proposed about updated model, which propagates data-related by considering first-order sensitivity analysis. particular, propagation performed through each iteration step minimization problem, taking into account between quantities. Numerical simulations on beam show feasibility effectiveness method.