Model updating using operational data

05 Feb

Second, an Iterated Improved Reduced System (IIRS) technique is employed to reduce the number of DOF of FE model.

Third, a damping matrix is estimated using modal damping ratios identified by a curve-fitting method and modified matrices which are obtained through the model updating and the DOF reduction.

Reliable and accurate numerical models are necessary tools to assess the current state and predict the remaining service life of these bridges.

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Furthermore, the prediction of remaining service life of these bridges is essential to allocate limited funds and resources to the most critical points in the infrastructure.

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