Pregled bibliografske jedinice broj: 581549
Evaluation of Methods for Identification of Structural Damping Using Continuous Wavelet Transformation, Application to Numerical And Real Data
Evaluation of Methods for Identification of Structural Damping Using Continuous Wavelet Transformation, Application to Numerical And Real Data // 7. International Congress of Croatian Society of Mechanics / Virag, Zdravko ; Kozmar, Hrvoje ; Smojver, Ivica (ur.).
Zagreb: Studio HRG, 2012. (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
CROSBI ID: 581549 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Evaluation of Methods for Identification of Structural Damping Using Continuous Wavelet Transformation, Application to Numerical And Real Data
Autori
Tomac, Ivan ; Lozina, Željan ; Sedlar, Damir
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
7. International Congress of Croatian Society of Mechanics
/ Virag, Zdravko ; Kozmar, Hrvoje ; Smojver, Ivica - Zagreb : Studio HRG, 2012
ISBN
978-953-6986-06-4
Skup
7. International Congress of Croatian Society of Mechanics
Mjesto i datum
Zadar, Hrvatska, 22.05.2012. - 25.05.2012
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
continious wavelet transfor; damping identification; longitudinal vibrations
Sažetak
Damping in mechanical systems is phenomena of energy dissipation. It comes in many forms and it is still not entirely studied. Structures and machines can be damped by mechanism that which have different external and internal natures. This includes: molecular microstructure effects, friction between parts, fluid interactions, etc. Generally, structural damping can be classified either as hysteretic or viscous. Hysteretic damping arises from internal friction on level of microcrystalline structure in the material. Viscous damping is proportional to velocity and affects system response in the range of system resonance. In practice many types of damping acts simultaneously and concept of equivalent viscous damping is used instead. In this work we are testing methods that detect damping ratios using time-frequency signal decomposition. This is achieved using a continuous wavelet transformation of free response signal. The evaluation of the damping identification methods is performed on numerically simulated and real laboratory models. The numerical simulation of the damping detection is performed on 2DOF model with a proportional viscous damping assumed. The practical damping identification is verified on measuring longitudinal vibrations of the free bar.
Izvorni jezik
Engleski
Znanstvena područja
Strojarstvo, Temeljne tehničke znanosti
POVEZANOST RADA
Projekti:
023-0231744-1747 - INVERZNI POSTUPCI I NAPREDNI ALGORITMI U DINAMICI KONSTRUKCIJA I STROJEVA (Lozina, Željan, MZOS ) ( CroRIS)
023-0231744-3113 - Inteligentni i evolucijski algoritmi optimizacije materijala i konstrukcija (Vučina, Damir, MZOS ) ( CroRIS)
Ustanove:
Fakultet elektrotehnike, strojarstva i brodogradnje, Split
