Numerical simulation of elastic wave propagation in wood with defined tree rings

0347581 - ÚTAM 2011 RIV SK eng J - Článek v odborném periodiku
Sebera, V. - Kotlínová, M. - Tippner, J. - Kloiber, Michal
Numerical simulation of elastic wave propagation in wood with defined tree rings.
Wood Research. Roč. 55, č. 3 (2010), s. 1-10. ISSN 1336-4561
Grant CEP: GA ČR(CZ) GPP105/10/P573
Výzkumný záměr: CEZ:AV0Z20710524
Klíčová slova: elastic wave propagation * experimental testing * numerical simulation
Kód oboru RIV: JN - Stavebnictví
Impakt faktor: 0.284, rok: 2010

The objective of the study was to perform a finite element (FE) simulation of elastic wave (EW) propagation in wood (Picea abies spp.). Based on measuring of tree rings width a FE model of wood with defined tree rings, substituted as an ideal annulus, was created. FE model was loaded to force impulse at different positions via the specimen length. Subsequently a propagation and travel timeof the EW through a material was observed. FE simulations were compared to the experimental ones acquired by different non-destructive acoustical tools (ADD, Geotron, FAKOPP and TICO). Results say that the FE model preserves trend of velocities of EW obtained from experiments, although comparing to them it embodies lower EW velocities in general.
Trvalý link: http://hdl.handle.net/11104/0188332