Evaluation of Dynamic Properties of Trees Subjected to Induced Vibrations

The preservation of trees in urban and archeological areas is a theme of particular relevance. Modern systems of monitoring, together with approaches for deriving the main characteristics of trees influencing their response toward extreme events, are nowadays at the basis of a growing number of stud...

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Bibliographic Details
Published inApplied sciences Vol. 13; no. 12; p. 7333
Main Authors Grande, Ernesto, Giordano, Ersilia, Clementi, Francesco
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.06.2023
Subjects
Accelerometers
Analysis
Archaeology
Case studies
Construction
Cultural heritage
Damage detection
Data acquisition
Data processing
Dynamic characteristics
dynamic identification
Dynamic response
Excitation
FE model
Fruit trees
Fruits
Identification
least square fitting
Modal damping
Monitoring systems
power spectrum density
Protection and preservation
Prunus cerasus
SDOF
signal-data processing
Trees
Urban areas
Vibration
Vibrations
Italy
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Summary:The preservation of trees in urban and archeological areas is a theme of particular relevance. Modern systems of monitoring, together with approaches for deriving the main characteristics of trees influencing their response toward extreme events, are nowadays at the basis of a growing number of studies. The aim of the present paper is the dynamic identification of trees carried out by employing an approach which combines a simple data-acquisition system, direct and ambient sources of excitation, and different data-processing methods. In particular, using a single accelerometer placed at different sections of the trunk and considering excitations induced by either pulling tests or ambient vibrations, the derivation of the main frequencies and levels of modal damping characterizing the dynamic response of a sour cherry tree (Prunus cerasus) is carried out. A finite element model of the tree is also carried out to support the validation of the proposed approach and further analyze the derived outcomes. The obtained results underline the feasibility of the proposed approach in deriving information useful for assessing the behavior of trees toward dynamic actions and, consequently, of particular relevance for the identification of possible damages induced by variations in terms of dynamic characteristics (frequencies) and damping.
ISSN:2076-3417
2076-3417
DOI:10.3390/app13127333