Determination of Elastic Properties of Beech Plywood by Analytical, Experimental and Numerical Methods
This research article examines the application of various methods to determine the effective elastic properties of beech veneer-wood composites. Using laminate theory, the theoretically calculated effective values of the in-plane and out-of-plane modulus of elasticity as well as shear modulus are co...
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doaj-49817a15d5914b2dac9969b6f2d9b08b2020-11-25T04:11:20ZengMDPI AGForests1999-49072020-11-01111221122110.3390/f11111221Determination of Elastic Properties of Beech Plywood by Analytical, Experimental and Numerical MethodsMiran Merhar0Department of Wood Science and Technology, Biotechnical Faculty, University of Ljubljana, 1000 Ljubljana, SloveniaThis research article examines the application of various methods to determine the effective elastic properties of beech veneer-wood composites. Using laminate theory, the theoretically calculated effective values of the in-plane and out-of-plane modulus of elasticity as well as shear modulus are compared with the values determined from the natural frequencies of flexural, torsional and longitudinal vibrations of samples having different orientations and numbers of composite layers. The samples are also modelled using the finite element method, and their natural frequencies are calculated by the modal analysis. Research has shown that the laminate theory, which is well established and applied in the world of synthetic composites, can also be applied to beech plywood composites, where the theoretically calculated effective values can be up to 15% higher. Similarly, due to the higher calculated effective elastic properties, higher natural frequencies of flexural, torsional and longitudinal vibrations are also calculated by the finite element method.https://www.mdpi.com/1999-4907/11/11/1221compositelaminate theoryflexural vibrationtorsionmodulus of elasticityshear modulus |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Miran Merhar |
spellingShingle |
Miran Merhar Determination of Elastic Properties of Beech Plywood by Analytical, Experimental and Numerical Methods Forests composite laminate theory flexural vibration torsion modulus of elasticity shear modulus |
author_facet |
Miran Merhar |
author_sort |
Miran Merhar |
title |
Determination of Elastic Properties of Beech Plywood by Analytical, Experimental and Numerical Methods |
title_short |
Determination of Elastic Properties of Beech Plywood by Analytical, Experimental and Numerical Methods |
title_full |
Determination of Elastic Properties of Beech Plywood by Analytical, Experimental and Numerical Methods |
title_fullStr |
Determination of Elastic Properties of Beech Plywood by Analytical, Experimental and Numerical Methods |
title_full_unstemmed |
Determination of Elastic Properties of Beech Plywood by Analytical, Experimental and Numerical Methods |
title_sort |
determination of elastic properties of beech plywood by analytical, experimental and numerical methods |
publisher |
MDPI AG |
series |
Forests |
issn |
1999-4907 |
publishDate |
2020-11-01 |
description |
This research article examines the application of various methods to determine the effective elastic properties of beech veneer-wood composites. Using laminate theory, the theoretically calculated effective values of the in-plane and out-of-plane modulus of elasticity as well as shear modulus are compared with the values determined from the natural frequencies of flexural, torsional and longitudinal vibrations of samples having different orientations and numbers of composite layers. The samples are also modelled using the finite element method, and their natural frequencies are calculated by the modal analysis. Research has shown that the laminate theory, which is well established and applied in the world of synthetic composites, can also be applied to beech plywood composites, where the theoretically calculated effective values can be up to 15% higher. Similarly, due to the higher calculated effective elastic properties, higher natural frequencies of flexural, torsional and longitudinal vibrations are also calculated by the finite element method. |
topic |
composite laminate theory flexural vibration torsion modulus of elasticity shear modulus |
url |
https://www.mdpi.com/1999-4907/11/11/1221 |
work_keys_str_mv |
AT miranmerhar determinationofelasticpropertiesofbeechplywoodbyanalyticalexperimentalandnumericalmethods |
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