2538 KB22 KB199920252014Boltežar, MihaKoblar, DavidŠkofic, Janletnik:60številka:7/8str. 506-511, SI 92ISSN:0039-2480COBISSID:13570843URN:URN:NBN:SI:doc-MOQ2OXOPenZveza strojnih inženirjev in tehnikov Slovenije et al.Strojniški vestnikgumagumi podobni materialiGummakončni elementimodelimodul elastičnostiEvaluation of the Young's modulus of rubber-like materials bonded to rigid surfaces with respect to Poisson's ratio|Axially loaded rubber blocks with a circular cross-section, whose ends are bonded to rigid plates, were studied. The frequency-response functions were obtained with a finite-element model on rubber specimens with respect to Poisson's ratio and the shape factor. Then the apparent Young's modulus was estimated and various equations that describe the relationship between the apparent Young's modulus and the actual Young's modulus of the rubber material were used to estimate the Young's modulus of the rubber material. The subsequently estimated Young%s modulus of the rubber material was compared to the one defined in the finite-element model. It is shown that there is a significant difference in the estimated Young's modulus when different equations were used, especially when the Poisson's ratio of the rubber material is smaller than the theoretical value of 0.5Gumeni materiali se pogosto uporabljajo za zmanjševanje prenosa vibracij in posledično tudi zmanjševanje hrupa. Pri vgradnji v aplikacije pa so gume ali gumi podobni materiali pogosto vezani na ali med toge plošče, zaradi česar pride do spremembe obnašanje gume, saj se pri obremenitvi vezana površina materiala ne more deformirati tako kot ostali del nevezani material, kar daje občutek večje togosti od dejanske. V kolikor želimo napovedati prenos vibracij preko gumenega materiala z modelom iz končnih elementov potrebujemo materialne podatke kot sta modul elastičnosti in Poissonovo številoTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za strojništvo