319 KB15 KB200020242014Bartošek, JanKroupa, TomášSmolík, Lubošletnik:48številka:6str. 841-845COBISSID:1113514ISSN:1580-2949URN:URN:NBN:SI:doc-6ZFEVNMTenInštitut za kovinske materiale in tehnologijeMateriali in tehnologijecompositeepoksi smolafinite-element analysiskompozitna tkaninakončni elementimodal analysismodalna analizapiezoelectricitypiezoelektrikasteklena vlaknaNumerical model of a composite airfoil segment with piezoelectric sensors| Numerični model kompozitnega odseka letalskega krila s piezoelektričnimi senzorji|A numerical model of an airfoil segment with piezoelectric sensors was created with commercial finite-element software Abaqus and its response to impact loading was compared with experimental results. The wing segment was made of woven-glass/epoxy composite with a varying number of plies and different types of weave. The material properties were experimentally determined from the tensile tests and used in the finite-element model of a rectangular plate. The results of the experimental modal analysis of a composite rectangular plate made of the same material as the segment were compared to the results of the numerical analysis and the parameters of the numerical model were adjusted. Finally, a numerical model of the whole segment was created and validated on the basis of the results of the corresponding experimental modal analysis. Moreover, piezoelectric sensors were glued to the segment and their response to dynamic loading was compared to the results of the numerical simulationS komercialnim programom končnih elementov Abaqus je bil postavljen numerični model segmenta letalskega krila s piezoelektričnimi senzorji, njegov odziv na udarno obremenitev pa je bil primerjan z rezultati preizkusov. Segment krila je bil izdelan iz kompozita steklene volne in epoksi smole z različnim številom prekritij in vezave. Lastnosti materiala so bile eksperimentalno določene z nateznimi preizkusi in uporabljene v modelu končnih elementov pravokotne plošče. Rezultati eksperimentalne modalne analize kompozitne pravokotne plošče, izdelane iz enakega materiala kot segment, so bili primerjani z rezultati numerične analize, prilagojeni pa so bili tudi parametri numeričnega modela. Na podlagi ustrezne eksperimentalne modalne analize je bil postavljen in ocenjen numerični model celotnega segmenta. Piezoelektrični senzorji so bili prilepljeni na segment in njihov odziv na dinamične obremenitve je bil primerjan z rezultati numerične simulacijeTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije