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Dynamic Properties of Styrene-Butadiene Rubber for Automotive Applications
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 19, 2009 by SAE International in United States
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Styrene-Butadiene Rubber (SBR) is a copolymer of butadiene and styrene. It has a wide range of applications in the automotive industry due to its high durability, resistance to abrasion, oils and oxidation. SBR applications vary from tires to vibration isolators and gaskets.
SBR is also used in tuned dampers which aim to reduce and control the angular vibrations of crankshafts, acting as an isolator and energy absorber between the tune damper's hub and the inertia ring. The dynamic properties of this polymer are therefore, very important in developing an appropriate analytical model.
This paper presents the results of a series of experiments performed to determine the dynamic stiffness and damping properties of SBR. The frequency, temperature and displacement dependent properties are determined in a low frequency range from 0.4 to 150 Hz, and in a mid frequency range from 150 to 550 Hz.
The most interesting property of SBR is its frequency dependent behavior. Our experimental data showed that the low frequency stiffness changes rapidly up to 20-30 Hz, followed by a more gradual slope towards mid range frequencies, while the damping in the frequency range of practical use, is very similar to structural damping.
CitationLin, H., Bengisu, T., and Mourelatos, Z., "Dynamic Properties of Styrene-Butadiene Rubber for Automotive Applications," SAE Technical Paper 2009-01-2128, 2009, https://doi.org/10.4271/2009-01-2128.
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