In this work, we propose a numerical strategy to detect damages in truss and beam structures exploiting lowest frequencies and mode shapes that are employed to calculate the flexibility matrix. In particular, for truss structures, the modal strain difference between damaged and healthy structures is used to identify the element characterized by the highest value of strain change, which corresponds to the most likely damaged element in the structure. Conversely, for beam structures, the highest value of modal curvature change is used as an index of element damage. Both procedures are validated using pseudo-experimental data accounting for noise pollution in mode shapes components.
Modesti, M., Gentilini, C., Palermo, A., Reynders, E., Lombaert, G. (2023). Identification of Damage in Truss and Beam Structures Based on Flexibility Matrix. Berlino : Springer, Cham [10.1007/978-3-031-39117-0_64].
Identification of Damage in Truss and Beam Structures Based on Flexibility Matrix
Modesti, Martina
Validation
;Gentilini, CristinaMethodology
;Palermo, AntonioMethodology
;Lombaert, GeertMembro del Collaboration Group
2023
Abstract
In this work, we propose a numerical strategy to detect damages in truss and beam structures exploiting lowest frequencies and mode shapes that are employed to calculate the flexibility matrix. In particular, for truss structures, the modal strain difference between damaged and healthy structures is used to identify the element characterized by the highest value of strain change, which corresponds to the most likely damaged element in the structure. Conversely, for beam structures, the highest value of modal curvature change is used as an index of element damage. Both procedures are validated using pseudo-experimental data accounting for noise pollution in mode shapes components.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
