Aucun titre de diapositive

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Mechanics and Civil Engineering Departement Wood
and Tree Mechanics Laboratory Montpellier
University , FRANCE
Sandrine BARDET Presentation on ongoing research
on wood mechanics in LMGC
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Tree and Wood Mechanics Laboratory
Montpellier Sciences University
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Members of the laboratory

• 3 researchers
• J. GRIL (head of the team) mechanics,
  modelling, tree mechanics
• B. CHANSON anatomist
• B. CLAIR micromechanics, anatomist, tree
  mechanics
• 4 lecturers
• D. JULLIEN fracture mechanics
• S. BARDET rheology of wood, thermo-hygro-mechani
  cal couplings
• O. ARNOULD micromechanics, multi-physical
  couplings
• T. LAURENT technological applications
• 4 PhD Students
• I. BREMAUD diversity of wood related to
  musical applications
• P. VINCENT thermo-viscoelasticity
• W. RANGSRI numerical modelling of deformation
  of wood cells
• P. AUBERT homogenisation
• And B. THIBAUT, now and french Guyana
  biodiversity, reaction wood, physical-chemical
  couplings

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Subjects studied in the laboratory
subject 1 WOOD IN THE TREE (origins and
consequences)
fabrication and structure example cell wall
structure, maturation process
origins of properties variability example
reaction wood
consequences example growth stress, splitting
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Subjects studied in the laboratory
subject 2 MULTISCALE BEHAVIOUR (physical and
mechanical behaviour at different scales)
ultrastructure example longitudinal behaviour
of the cell wall
microstructure example compression of cellular
material
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Modelling the compression of a representative
cellular arrangement
Simulation
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Subjects studied in the laboratory
subject 2 MULTISCALE BEHAVIOUR (physical and
mechanical behaviour at different scales)
chemical components example relation chemical
composition / viscoelasticity
ultrastructe
microstructure
Exemple influence of extractives on vibrational
properties of Padouk (I. Bremaud)
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Subjects studied in the laboratory
subject 3 THERMO-HYGRO-MECHANICAL COUPLINGS
thermoviscoelasticity of green wood Modelling /
experimental data
Exemple influence of preheating on relaxation
curves (S. Bardet)
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Subjects studied in the laboratory
subject 3 THERMO-HYGRO-MECHANICAL COUPLINGS
thermoviscoelasticity of green wood Modelling /
experimental data
Exemple Influence of temperature on the
torsional behaviour of reaction/normal wood (P.
Vincent)
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Subjects studied in the laboratory
subject 3 THERMO-HYGRO-MECHANICAL COUPLINGS
thermoviscoelasticity of green wood Modelling /
experimental data
Hygro-viscoelasticity of wood
Study of mechanosorptive effect - J. Gril/D. Hunt
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Subjects studied in the laboratory
subject 4 VALORISATION OF MEDITERRANEAN AND
TROPICAL WOOD
local species example hot oil treatment of
chestnut
collecting data on tropical wood
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Subjects studied in the laboratory
subject 5 WOOD MACHINING
example rotary veneer cutting (influence of
density, pressure bar )
Now studied in Cluny