Dynamic Property Analysis of Damping Rubber in Rail Fastenings under Different Deformation Condition

Bin Zhang; Yan Yun Luo; Zhi Nan Shi

doi:10.4028/www.scientific.net/AMM.494-495.706

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 494-495Dynamic Property Analysis of Damping Rubber in...

Dynamic Property Analysis of Damping Rubber in Rail Fastenings under Different Deformation Condition

Abstract:

This paper studies the experimental research on dynamic characteristics of the damping rubber in high elastic fastening by the electro-hydraulic servo movement tester. Based on a hypothesis superposition theory of nonlinear elastic restoring force and nonlinear damping force, a non-linear dynamic mechanical model is proposed. The dynamic stiffness and damping parameters of the rubber are obtained in different deformation conditions based on the dynamic mechanical model. The dynamic stiffness is analyzed, and the results show that dynamic stiffness is closely related to excitation frequency and amplitude. Furthermore the dynamic stiffness is analyzed under different free surface of rubber components by using FEM. That also reveals the changeable characteristics and affected factors of the damping rubber of the high elastic fastenings in large distortion condition.

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Periodical:

Applied Mechanics and Materials (Volumes 494-495)

Pages:

706-710

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.494-495.706

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Online since:

February 2014

Authors:

Bin Zhang*, Yan Yun Luo, Zhi Nan Shi

Keywords:

Dynamic Characteristic, Dynamic Mechanical Model, High Elastic Fastening, Nonlinear, Rubber, Simulation, Stiffness

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References

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