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ISSN Print: 2381-1072 ISSN Online: 2381-1080

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Experimental Investigation of Rubber Damping by Decay Rate Method

Engineering and Technology
Vol.5 , No. 1, Publication Date: Mar. 2, 2018, Page: 13-20

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Authors

[1]	Ali Rahrovi, School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran.
[2]	Abolfazl Safdary, Department of Mechanical Engineering, Isfahan University Technology, Isfahan, Iran.

Abstract

In this paper, a research was performed on the manner of determining the vibration properties of rubbers. In the domain of vibration and noise control discussions, amplitude must be reduced for this purpose damping have to be increased. Rubbers increase damping of structures. There are different methods for the determination of the dynamic properties of viscoelastic materials. With regard to the existing facilities, the decay rate method was used for the determination of the dynamic properties of rubber. It is observed that the damping rate of the metal plane is significantly reduced with an increase in natural frequency. Therefore, the use of damping layers is more required for higher frequencies. But by adding a layer of viscoelastic, the natural frequency of the system is reduced. In conclusion the increase of the thickness of the damping layer or installation of the layer in a constrained form causes significant increase in the rate of damping and reduction of vibration damping time.

Keywords

Damping, Damping Layer, Decay Rate, Natural Frequency, Rubber, Vibration

Reference

[01]	Kun, Y., L. Li, and T. Jiaxiang, Stochastic seismic response of structures with added viscoelastic dampers modeled by fractional derivative. Earthquake Engineering and Engineering Vibration, 2003. 2 (1): p. 133-139.
[02]	Cortes, F. and M. J. Elejabarrieta, Structural vibration of flexural beams with thick unconstrained layer damping. International Journal of Solids and Structures 2008. 45: p. 5805-5813.
[03]	Yu, X., et al., A novel matrix method for coupled vibration and damping effect analyses of liquid-filled circular cylindrical shells with partially constrained layer damping under harmonic excitation. Applied Mathematical Modeling 2010. 166: p. 789-895.
[04]	Kumar, N. and S. P. Singh, Vibration and damping characteristics of beams with active constrained layer treatments under parametric variations. Materials and Design 2009. 30 (4162-417).
[05]	Chang, T.-s. and M. Singh, Seismic analysis of structures with a fractional derivative model of viscoelastic dampers. Earthquake Engineering and Engineering Vibration, 2002. 1 (2): p. 251-260.
[06]	Lee, D.-G., S. Hong, and J. Kim, Efficient seismic analysis of building structures with added viscoelastic dampers. Engineering Structures 2002. 24: p. 1217-1227.
[07]	Kumar, N. and S. P. Singh, Experimental study on vibration and damping of curved panel treated with constrained viscoelastic layer. Composite Structures 2010. 92: p. 233-243.
[08]	Marko, J., D. Thambiratnam, and N. Perera, Influence of damping systems on building structures subject to seismic effects. Engineering Structures, 2004. 26: p. 1939-1956.
[09]	Kishi, H., et al., Damping properties of thermoplastic-elastomer interleaved carbon fiber-reinforced epoxy composites. Composites Science and Technology, 2004. 64: p. 2517-2523.
[10]	Berthelot, J. M., Damping analysis of laminated beams and plates using the Ritz method. Composite Structures, 2006. 74: p. 186-201.
[11]	Kristensen, R. F., K. L. Nielsen, and L. P. Mikkelsen, Numerical studies of shear damped composite beams using a constrained damping layer. Composite Structures 2008. 83: p. 304-311.
[12]	Dall’Astaa, A. and L. Ragni, Experimental tests and analytical model of high damping rubber dissipating devices. Engineering Structures 2006. 28: p. 1874-1884.
[13]	Dall’Asta, A. and L. Ragni, Nonlinear behavior of dynamic systems with high damping rubber devices. Engineering Structures, 2008. 30: p. 3610-3618.
[14]	Pagnini, L. C. and G. Solari, Damping measurements of steel poles and tubular towers. Engineering Structures 2001. 23: p. 1085-1095.
[15]	Nashif, A. D., D. I. G. Jones, and J. P. Henderson, Vibration Damping. 1985, New York: Wiley.
[16]	Harris., C. M., Hariss shock and vibration handbook, ed. r. edition. 2002, New York: McGraw-Hill.
[17]	(B&K), B. K., Digital filter Techniques FFT Techniques for damping measurement, in Technical Review. 1994.
[18]	BROCH, J. T., Mechanical Vibration and Shock Measurements. 1980: Briiel & Kjrer (B&K).
[19]	Talbot, J. P. and J. Woodhouse, The vibration damping of laminated plates. Composites Part A: Applied Science and Manufacturing, 1997. 28: p. 1007-1012.
[20]	McIntyre, M. E. and J. Woodhouse, On measuring the elastic and damping constants of orthotropic sheet materials. Acta Metallurgica, 1988. 36: p. 1397-1416.