Open AccessLINEAR VISCOELASTIC MODEL OF BORASSUS WOOD: RHEOLOGICAL PARAMETERS
Author(s) -
Robert Michozounnou,
AUTHOR_ID,
Valéry Doko,
Agapi K. Houanou,
Gérard L. Gbaguidi Aïsse,
A. Foudjet,
Antoine Vianou,
AUTHOR_ID,
AUTHOR_ID,
AUTHOR_ID,
AUTHOR_ID,
AUTHOR_ID,
AUTHOR_ID,
AUTHOR_ID,
AUTHOR_ID
Publication year - 2022
Publication title -
international journal of advanced research
Language(s) - English
Resource type - Journals
ISSN - 2320-5407
DOI - 10.21474/ijar01/14037
Subject(s) - viscoelasticity , rheology , creep , bending , mathematics , materials science , composite material
The aim of the presentworkis to study the viscoelastic model of Borassus Aethiopum Mart whichis relevant for the characterisation of a Borassus Pre-stressedConcretebeam. Mechanical tests werecarried out mainly the creep test on typical Borassus Aethiopum Mart specimensfrom the Pahou-Ahozon forestgallery in southern Benin, Africa, subjected to a constant bending stress along the beam. The moisture content of the specimensis set at 12% and isobtained by kilndrying at ATC du Bois. The loadinglevel of the specimensis set at 20% of the failureload. A methodologystartingfrom the determination of the compressive and bending stresses of Borassus Aethiopum Mart for the identification of the optimal values of the dynamicelasticmodulus E and the dynamicviscosity constant η of Borassus Aethiopum Mart with the non-linear least squares methodapplied to the Kelvin Voigt rheological model. The instantaneousmodulus of elasticity E0 wasdeterminedfromHookeslaw. A series of validation tests wereperformed on the numerical model. Finally, a comparison of the numerical model with the rheologicalrepresentationconfirmed the previousresults.