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CHEN Xirui, GONG Xiansheng. Model of dynamic damping behaviour for a new BTG plastic alloy about temperature frequency amplitude[J]. Acta Materiae Compositae Sinica, 2011, 28(4): 219-224.
Citation: CHEN Xirui, GONG Xiansheng. Model of dynamic damping behaviour for a new BTG plastic alloy about temperature frequency amplitude[J]. Acta Materiae Compositae Sinica, 2011, 28(4): 219-224.
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Model of dynamic damping behaviour for a new BTG plastic alloy about temperature frequency amplitude

  • 1.

    The State Key Laboratory of Mechanical Transmission, College of Mechanical Engineering, Chongqing University, Chongqing 400030, China;

  • 2.

    College of Mechanical Engineering, Chongqing Technology and Business University, Chongqing 400067, China

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  • Received Date: July 18, 2010
  • Revised Date: November 15, 2010
    Abstract
  • A mathematical model is constructed to describe the dynamic damping performance for a new type of BTG plastic alloy about the temperature-frequency-amplitude. The experimental data of dynamic damping loss factor of BTG plastic alloy were obtained through test of frequency sweep, temperature sweep and amplitude sweep in the dynamic thermal analyzer DMA242. Through the analysis of the experimental data, the amount of damping loss factor is separated 2 components, namely, the amount related only to the frequency and the amount related to both the frequency and temperature .The amount related only to the frequency is described by Kelvin model of fractional derivative and the amount related to both the frequency and temperature is described by Gaussian function. A comprehensive model considering of the temperature-frequency-amplitude is established reference to the above model plus the amplitude factor. The results show that the comprehensive model can accurately describe the experimental data.
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