TY  - JOUR
T1  - Eşdeğer Kütle-Yay-Sönüm Elemanı Kullanılan Ankastre Kompozit Bir Kirişin Titreşim Analizi
TT  - Vibration Analysis of a Cantilever Composite Beam by Equivalent Mass-Spring-Damper Systems
AU  - Yavuz, Şahin
AU  - Uyar, Mehmet
AU  - Malgaca, Levent
AU  - Karagülle, Hira
PY  - 2018
DA  - September
JF  - Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi
JO  - DEUFMD
PB  - Dokuz Eylul University
WT  - DergiPark
SN  - 1302-9304
SP  - 946
EP  - 954
VL  - 20
IS  - 60
LA  - tr
AB  - Kompozitmalzemeler hafif ve dayanıklı oldukları için manipülatör olarak endüstriyelyapılarda yaygın olarak kullanılmaktadır. Bu çalışmada, [0/90] oryantasyonasahip ankastre kompozit bir kirişin titreşim analizi çalışılmıştır. Yapınınucuna kütle eklenmiştir. Başlangıç koşulu olarak deplasman uç noktayauygulanmış ve deneysel sistemin serbest titreşimi elde edilmiştir.Eksponansiyel sönüm bulunmuştur. Titreşim sinyalinin Hızlı Fourier dönüşümükullanılarak doğal frekanslar hesaplanmıştır. Sistem ANSYS programında analizedilmiş ve simülasyon sonuçları elde edilmiştir. Sönüm katsayısı, deneyden eldeedilen eksponansiyel sönümden yararlanılarak hesaplanmıştır. Deneysel ya dasimülasyondan elde edilen statik çökme, doğal frekans ve eksponansiyel sönümkullanılarak sistemin eşdeğer kütle-yay-sönüm elemanı oluşturulmuştur. Eşdeğerkütle-yay-sönüm elemanı sonuçları Laplace dönüşüm metodu ile elde edilmiştir.Deneysel, simülasyon ve analitik sonuçlar uç noktanın farklı başlangıç yerdeğiştirme değerleri için karşılaştırılmıştır. Sonuçların uyumluluğugözlemlenmiştir.
KW  - Kompozit kiriş
KW  - Titreşim analizi
KW  - Eşdeğer sistem
KW  - ANSYS
N2  - Compositematerials are widely used in industrial structures such as manipulators becausethey are lightweight and durable. In this work, the vibration analysis of acantilever composite beam with [0/90] lay-up was studied. An end point mass wasadded to the structure. An initial displacement was applied to the end pointand the free vibration was analyzed experimentally first. Exponentialdecay was found. Natural frequencies were determined by taking the FastFourier Transform of the vibration signal. The system was analyzed in ANSYS andsimulation results were obtained. The damping coefficient was determined bytrial using the experimental exponential decay. An equivalentmass-spring-damper model (MSD) was established using static deflection, naturalfrequency and exponential decay obtained experimentally or by simulation.MSD-analytical results were obtained by the Laplace transform method. Theexperimental, simulation, and analytical results were compared for differentend point initial displacement values. It was observed that the results are ingood agreement.
CR  - [1]	Sina, S. A., Navazi, H. M., Haddadpour H. 2009. An analytical method for free vibration analysis of functionally graded beams, Materials and Design, Cilt. 30 , s. 741–747.
CR  - [2]	Giunta, G., Biscani, F., Belouettar, S., Ferreira, A.J.M., Carrera E. 2013. Free vibration analysis of composite beams via refined theories, Composites: Part B, Cilt. 44 , s. 540–552.
CR  - [3]	Ganesan, R., Zabihollah, A. 2007. Vibration analysis of tapered composite beams using a higher-order finite element. Part I: Formulation, Composite Structures, Cilt. 77, s. 306–318.
CR  - [4]	Li, J., Hu, X., Li, X. 2016. Free vibration analyses of axially loaded laminated composite beams using a unified higher-order shear deformation theory and dynamic stiffness method. Journal of Composite Structures, Cilt. 158, s. 308-322.
CR  - [5]	Vo, T.P., Lee, J. 2009. Flexural–torsional coupled vibration and buckling of thin-walled open section composite beams using shear-deformable beam theory, International Journal of Mechanical Sciences, Cilt. 51, s. 631–641.
CR  - [6]	Ghafari, E., Rezaeepazhand, J. 2016. Vibration analysis of rotating composite beams using polynomial based dimensional reduction method. International Journal of Mechanical Sciences, Cilt. 115, s. 93-104.
CR  - [7]	Lee, I., Choi, K.K., Du, L., Gorsich, D. 2008. Dimension reduction method for reliability-based robust design optimization, Computers and Structures, Cilt. 86, s. 1550–1562.
CR  - [8]	Lu, W., Ge, F., Wu, X., Hong, Y. 2013. Nonlinear dynamics of a submerged floating moored structure by incremental harmonic balance method with FFT. Marine Structures, Cilt. 31, s. 63–81.
CR  - [9]	Monciet, V. 2015. Combining FFT methods and standard variational principles to compute bounds and estimates for the properties of elastic composites. Computer Methods in Applied Mechanics and Engineering, Cilt. 283, s. 454-473.
CR  - [10]	Mariot, S., Leroy, V., Pierre, J., Elias, F., Bouthemy, E., Langevin, D. 2015. An FFT approach to the analysis of dynamic properties of gas/liquid interfaces. Colloids and Surfaces A: Physicochemical and Engineering Aspects, Cilt. 473, s. 11-17.
CR  - [11]	Nagarajaiah, S., Basu, B. 2009. Output only modal identifi cation and structural damage detection using time frequency and wavelet techniques, Earthquake Engineering and Engineering Vibration, Cilt. 8, s.583-605.
CR  - [12]	Badour, F.A., Sunar, M., Cheeded, L. 2011. Vibration analysis of rotating machinery using time-frequency analysis and wavelet techniques. Journal of Mechanical Systems and Signal Processing, Cilt. 25, s. 2083-2101.
CR  - [13]	Haosheng, L., Su, W., Kratz, H. 2007. FFT and wavelet-based analysis of the influence of machine vibrations on hard turned surface topographies. Tshingua Science and Technology, Cilt. 12(4), s. 441-446.
CR  - [14]	Kabel, M., Merkert, D., Schneider, M. 2015. Use of composite voxels in FFT-based homogenization. Computer Methods in Applied Mechanics and Engineering, Cilt. 294, s. 168–188.
CR  - [15]	S. Rao , Mechanical Vibrations, 5th ed., Prantice-Hall, Upper Saddle River, 2011 .
CR  - [16]	MicroStrain Inc. 2015. Web adresi: http://www.microstrain.com/wireless/sensors. Erişim tarihi: 02.11.2015.
CR  - [17]	Kiral, Z., Malgaca L., Akdağ, M. Kiral, B.G. 2009. Experimental Investigation of the Dynamic Response of a Symmetric Laminated Composite Beam Via Laser Vibrometry. Journal of Composite Materials. Cilt, 43(24), s. 2943-2962.
UR  - https://dergipark.org.tr/en/pub/deumffmd/issue//514769
L1  - https://dergipark.org.tr/en/download/article-file/629458
ER  -