A mechanical analysis of the relationship between free oscillations of Pinus pinaster Ait. saplings and their aerial architecture
The aim of this study was to investigate the influence of aerial architecture on the dynamic characteristics of young maritime pines (Pins pinaster Ait.) using a mechanistic approach. For this purpose, three 4-year-old saplings with prominent differences in their branching patterns were submitted to free oscillation tests. The tests were carried out with different methods and directions of mechanical loading in order to initiate the movement of each sapling. The oscillations of the different architectural elements, i.e. stem and branches of different topological order, were measured with inclinometers and strain gauges fixed to saplings. Successive pruning of the architectural elements was carried out to evaluate their relative influence on the dynamic characteristics of the trees. The aerial systems were digitized before the mechanical tests in order to use 3D visualization techniques and to make architectural analyses of the crown structure. Two distinct modes of deformation were detected during free oscillations. The natural swaying frequency ranged from 0.6-0.8 Hz for the saplings tested at the same period of the year. The frequency variations were partly explained by the morphological differences of the experimental subjects. The motions of the axes were found to depend on their topology, i.e. the movement of the axes of a given branching order was forced by the movement of their respective bearing axis. The axes of third branching order had a significant and negative effect on the damping of the natural deformation mode. Results point out the major role played by foliage, qualitatively and quantitatively, on the damping of tree motions and on coupling the motions of the crown components.
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Subjects: | F50 - Anatomie et morphologie des plantes, F62 - Physiologie végétale - Croissance et développement, U10 - Informatique, mathématiques et statistiques, Pinus pinaster, port de la plante, ramification, propriété mécanique, feuillage, mouvement, résistance au vent, http://aims.fao.org/aos/agrovoc/c_5904, http://aims.fao.org/aos/agrovoc/c_5969, http://aims.fao.org/aos/agrovoc/c_1057, http://aims.fao.org/aos/agrovoc/c_4683, http://aims.fao.org/aos/agrovoc/c_36752, http://aims.fao.org/aos/agrovoc/c_4961, http://aims.fao.org/aos/agrovoc/c_8396, |
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dig-cirad-fr-5264832024-01-28T13:36:22Z http://agritrop.cirad.fr/526483/ http://agritrop.cirad.fr/526483/ A mechanical analysis of the relationship between free oscillations of Pinus pinaster Ait. saplings and their aerial architecture. Sellier Damien, Fourcaud Thierry. 2005. Journal of Experimental Botany, 56 (416) : 1563-1573.https://doi.org/10.1093/jxb/eri151 <https://doi.org/10.1093/jxb/eri151> A mechanical analysis of the relationship between free oscillations of Pinus pinaster Ait. saplings and their aerial architecture Sellier, Damien Fourcaud, Thierry eng 2005 Journal of Experimental Botany F50 - Anatomie et morphologie des plantes F62 - Physiologie végétale - Croissance et développement U10 - Informatique, mathématiques et statistiques Pinus pinaster port de la plante ramification propriété mécanique feuillage mouvement résistance au vent http://aims.fao.org/aos/agrovoc/c_5904 http://aims.fao.org/aos/agrovoc/c_5969 http://aims.fao.org/aos/agrovoc/c_1057 http://aims.fao.org/aos/agrovoc/c_4683 http://aims.fao.org/aos/agrovoc/c_36752 http://aims.fao.org/aos/agrovoc/c_4961 http://aims.fao.org/aos/agrovoc/c_8396 The aim of this study was to investigate the influence of aerial architecture on the dynamic characteristics of young maritime pines (Pins pinaster Ait.) using a mechanistic approach. For this purpose, three 4-year-old saplings with prominent differences in their branching patterns were submitted to free oscillation tests. The tests were carried out with different methods and directions of mechanical loading in order to initiate the movement of each sapling. The oscillations of the different architectural elements, i.e. stem and branches of different topological order, were measured with inclinometers and strain gauges fixed to saplings. Successive pruning of the architectural elements was carried out to evaluate their relative influence on the dynamic characteristics of the trees. The aerial systems were digitized before the mechanical tests in order to use 3D visualization techniques and to make architectural analyses of the crown structure. Two distinct modes of deformation were detected during free oscillations. The natural swaying frequency ranged from 0.6-0.8 Hz for the saplings tested at the same period of the year. The frequency variations were partly explained by the morphological differences of the experimental subjects. The motions of the axes were found to depend on their topology, i.e. the movement of the axes of a given branching order was forced by the movement of their respective bearing axis. The axes of third branching order had a significant and negative effect on the damping of the natural deformation mode. Results point out the major role played by foliage, qualitatively and quantitatively, on the damping of tree motions and on coupling the motions of the crown components. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/526483/1/document_526483.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1093/jxb/eri151 10.1093/jxb/eri151 info:eu-repo/semantics/altIdentifier/doi/10.1093/jxb/eri151 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1093/jxb/eri151 |
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F50 - Anatomie et morphologie des plantes F62 - Physiologie végétale - Croissance et développement U10 - Informatique, mathématiques et statistiques Pinus pinaster port de la plante ramification propriété mécanique feuillage mouvement résistance au vent http://aims.fao.org/aos/agrovoc/c_5904 http://aims.fao.org/aos/agrovoc/c_5969 http://aims.fao.org/aos/agrovoc/c_1057 http://aims.fao.org/aos/agrovoc/c_4683 http://aims.fao.org/aos/agrovoc/c_36752 http://aims.fao.org/aos/agrovoc/c_4961 http://aims.fao.org/aos/agrovoc/c_8396 F50 - Anatomie et morphologie des plantes F62 - Physiologie végétale - Croissance et développement U10 - Informatique, mathématiques et statistiques Pinus pinaster port de la plante ramification propriété mécanique feuillage mouvement résistance au vent http://aims.fao.org/aos/agrovoc/c_5904 http://aims.fao.org/aos/agrovoc/c_5969 http://aims.fao.org/aos/agrovoc/c_1057 http://aims.fao.org/aos/agrovoc/c_4683 http://aims.fao.org/aos/agrovoc/c_36752 http://aims.fao.org/aos/agrovoc/c_4961 http://aims.fao.org/aos/agrovoc/c_8396 |
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F50 - Anatomie et morphologie des plantes F62 - Physiologie végétale - Croissance et développement U10 - Informatique, mathématiques et statistiques Pinus pinaster port de la plante ramification propriété mécanique feuillage mouvement résistance au vent http://aims.fao.org/aos/agrovoc/c_5904 http://aims.fao.org/aos/agrovoc/c_5969 http://aims.fao.org/aos/agrovoc/c_1057 http://aims.fao.org/aos/agrovoc/c_4683 http://aims.fao.org/aos/agrovoc/c_36752 http://aims.fao.org/aos/agrovoc/c_4961 http://aims.fao.org/aos/agrovoc/c_8396 F50 - Anatomie et morphologie des plantes F62 - Physiologie végétale - Croissance et développement U10 - Informatique, mathématiques et statistiques Pinus pinaster port de la plante ramification propriété mécanique feuillage mouvement résistance au vent http://aims.fao.org/aos/agrovoc/c_5904 http://aims.fao.org/aos/agrovoc/c_5969 http://aims.fao.org/aos/agrovoc/c_1057 http://aims.fao.org/aos/agrovoc/c_4683 http://aims.fao.org/aos/agrovoc/c_36752 http://aims.fao.org/aos/agrovoc/c_4961 http://aims.fao.org/aos/agrovoc/c_8396 Sellier, Damien Fourcaud, Thierry A mechanical analysis of the relationship between free oscillations of Pinus pinaster Ait. saplings and their aerial architecture |
description |
The aim of this study was to investigate the influence of aerial architecture on the dynamic characteristics of young maritime pines (Pins pinaster Ait.) using a mechanistic approach. For this purpose, three 4-year-old saplings with prominent differences in their branching patterns were submitted to free oscillation tests. The tests were carried out with different methods and directions of mechanical loading in order to initiate the movement of each sapling. The oscillations of the different architectural elements, i.e. stem and branches of different topological order, were measured with inclinometers and strain gauges fixed to saplings. Successive pruning of the architectural elements was carried out to evaluate their relative influence on the dynamic characteristics of the trees. The aerial systems were digitized before the mechanical tests in order to use 3D visualization techniques and to make architectural analyses of the crown structure. Two distinct modes of deformation were detected during free oscillations. The natural swaying frequency ranged from 0.6-0.8 Hz for the saplings tested at the same period of the year. The frequency variations were partly explained by the morphological differences of the experimental subjects. The motions of the axes were found to depend on their topology, i.e. the movement of the axes of a given branching order was forced by the movement of their respective bearing axis. The axes of third branching order had a significant and negative effect on the damping of the natural deformation mode. Results point out the major role played by foliage, qualitatively and quantitatively, on the damping of tree motions and on coupling the motions of the crown components. |
format |
article |
topic_facet |
F50 - Anatomie et morphologie des plantes F62 - Physiologie végétale - Croissance et développement U10 - Informatique, mathématiques et statistiques Pinus pinaster port de la plante ramification propriété mécanique feuillage mouvement résistance au vent http://aims.fao.org/aos/agrovoc/c_5904 http://aims.fao.org/aos/agrovoc/c_5969 http://aims.fao.org/aos/agrovoc/c_1057 http://aims.fao.org/aos/agrovoc/c_4683 http://aims.fao.org/aos/agrovoc/c_36752 http://aims.fao.org/aos/agrovoc/c_4961 http://aims.fao.org/aos/agrovoc/c_8396 |
author |
Sellier, Damien Fourcaud, Thierry |
author_facet |
Sellier, Damien Fourcaud, Thierry |
author_sort |
Sellier, Damien |
title |
A mechanical analysis of the relationship between free oscillations of Pinus pinaster Ait. saplings and their aerial architecture |
title_short |
A mechanical analysis of the relationship between free oscillations of Pinus pinaster Ait. saplings and their aerial architecture |
title_full |
A mechanical analysis of the relationship between free oscillations of Pinus pinaster Ait. saplings and their aerial architecture |
title_fullStr |
A mechanical analysis of the relationship between free oscillations of Pinus pinaster Ait. saplings and their aerial architecture |
title_full_unstemmed |
A mechanical analysis of the relationship between free oscillations of Pinus pinaster Ait. saplings and their aerial architecture |
title_sort |
mechanical analysis of the relationship between free oscillations of pinus pinaster ait. saplings and their aerial architecture |
url |
http://agritrop.cirad.fr/526483/ http://agritrop.cirad.fr/526483/1/document_526483.pdf |
work_keys_str_mv |
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