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What does the jbridge 1.75 update1/16/2024 ![]() ![]() The proposed FEMU method uses two steps to utilize static and dynamic data in a sequential manner. To address the limitation of the conventional FEMU method, this study proposes a sequential framework for the FEMU of existing bridges. This aggravates the parameter identifiability to make the results of the FEMU worse. For FEMU of the bridge, parameter compensation may exist due to mutual dependence among updating parameters. Otherwise, the information from heterogeneous data cannot be efficiently utilized. In this implementation, it should be careful to formulate the objective function with proper weighting factors to consider the scale of measurement and relative significances. The conventional FEMU framework in previous studies have used heterogeneous data at once to compute residuals in the objective function, and they are condensed to be a scalar. ![]() ![]() It is worth noting that the useful information from the heterogeneous data may be diluted in the conventional FEM framework. Using heterogeneous data can provide useful information to improve parameter identifiability in FEMU. By virtue of the advances in sensing techniques, finite element (FE) model updating (FEMU) using static and dynamic data has been recently employed to improve identification on updating parameters. ![]()
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