Determination of elastic properties of beech plywood by analytical, experimental and numerical methods

Povzetek

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 dfferent 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.

Ključne besede

kompoziti;laminatna teorija;upogibno nihanje;torzija;modul elastičnosti;strižni modul;metoda končnih elementov;modalna analiza;vezan les;bukev;composite;laminate theory;flexural vibration;torsion;modulus of elasticity;shear modulus;finite element method;modal analysis;plywood;beech;

Podatki

Jezik:	Angleški jezik
Leto izida:	2020
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL BF - Biotehniška fakulteta
UDK:	630*8
COBISS:	38797059
ISSN:	1999-4907
Št. ogledov:	139
Št. prenosov:	78
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	kompoziti;laminatna teorija;upogibno nihanje;torzija;modul elastičnosti;strižni modul;metoda končnih elementov;modalna analiza;vezan les;bukev;
Vrsta dela (COBISS):	Članek v reviji
Strani:	21 str.
Letnik:	ǂVol. ǂ11
Zvezek:	ǂiss. ǂ11
Čas izdaje:	2020
DOI:	10.3390/f11111221
ID:	14363901