Simulation analysis of the hysteresis heat generation in damping rubber

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (12) : 210-218.

LUO Wenbo1,2,JIANG Xia2,HU Xiaoling1,2,HUANG Youjian2

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Abstract

Rubber has been widely used as damping material due to its excellent hyperelasticity and damping properties.Under cyclic deformation, the hysteresis loss of the material dissipates as heat, which causes self-heating of the material, and then changes the dynamic viscoelastic properties of the material due to their temperature dependence.Thus, the cyclic deformation of rubber material is a thermomechanically coupling process in nature.A modified Kraus model was used to describe the variation of the dynamic loss modulus of rubber material with temperature, loading frequency and strain amplitude, then the hysteresis heat generation rate of the cyclic loaded rubber was given according to the theory of viscoelasticity and the corresponding calculation program was developed.Finally, the hysteresis heat generation behavior of rubber cylinder specimen and an hourglass rubber damper under cyclic load were analyzed through deformation analysis, thermal analysis and thermo-mechanical coupling iterative calculation with the ABAQUS finite element software, and the corresponding temperature field and the time history of the self-heating induced temperature rise were obtained for the cases of different load frequencies and strain amplitudes.It is shown that the numerical calculations are in good agreement with measured values.

Key words

rubber / hysteresis loss / thermomechanical coupling / self-heating temperature rise / Kraus model

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LUO Wenbo1,2,JIANG Xia2,HU Xiaoling1,2,HUANG Youjian2. Simulation analysis of the hysteresis heat generation in damping rubber[J]. Journal of Vibration and Shock, 2021, 40(12): 210-218

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