20.500.12556/RUL-134686 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 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. composite laminate theory flexural vibration torsion modulus of elasticity shear modulus finite element method modal analysis plywood beech kompoziti laminatna teorija upogibno nihanje torzija modul elastičnosti strižni modul metoda končnih elementov modalna analiza vezan les bukev true false true Angleški jezik Slovenski jezik Članek v reviji 2022-01-26 09:52:46 2022-01-26 09:52:52 2022-09-13 03:56:33 0000-00-00 00:00:00 2020 0 0 21 str. iss. 11, art. 1221 Vol. 11 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*8 1999-4907 10.3390/f11111221 38797059 RAZ_Merhar_Miran_2020.pdf RAZ_Merhar_Miran_2020.pdf 1 D5B44F4E93811C91C6E965E907D834E7 bc8a76df6f89d932d13d880ac3e96cfc3d4213ad55b30454ecc6c86824768ed7 95ba9346-7e8d-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=153254 https://www.mdpi.com/1999-4907/11/11/1221 1 24ce9649-7e85-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=153253 Biotehniška fakulteta 0 0 0