Extremely challenging task to consider uncertainty in the typically challenge damping identification

What is it about?

Damping identification in structural dynamics is a typical but always challenging issue because of the complex mechanism of the damping. Then what would happen if the inevitable experimental uncertainty is considered in the task? Indeed, even for the same experimental device, the repeated experimental data can lead to very different damping results. This paper proposes a probabilistic approach to deal with this challenge.

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Why is it important?

This work shows a clear example that from the same structure, using the same experimental method and sensors, the finally identified damping can still be very different. In the presence of experimental uncertainty, the aim of damping identification in this paper is not a single deterministic solution with maximum fidelity to a single experiment, but rather a set of optimized solutions with acceptable robustness to multiple uncertain experiments.

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