Predictive Model of an Elastomer for Dynamic Properties under Thermal Environment



Dooho Lee


In this paper, the variability of dynamic stiffness in an elastomer due to thermal aging is estimated using a degradation model and uncertainty quantification method. A degradation model introduced for the thermal aging also describes the variation of the material properties along time.
A finite element model describes the dynamic characteristics of the elastomer. The variability of the predicted degradation under the quantified uncertainties is estimated using the double-loop eigenvector dimension reduction (EDR) method. The proposed method is applied to a mount as a numerical example.

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Bauer DR, Baldwin JM, Ellwood KR (2005) Correlation of rubber properties between field aged tires and laboratory aged tires Rubber chemistry and technology 78:777-792
Celina MC (2013) Review of polymer oxidation and its relationship with materials performance and lifetime prediction Polymer Degradation and Stability 98:2419-2429
Jung BC, Lee D, Youn BD (2009) Optimal Design of Constrained-Layer Damping Structures Considering Material and Operational Condition Variability AIAA Journal 47:2985-2995
Jung BC, Lee D, Youn BD, Lee S (2011) A statistical characterization method for damping material properties and its application to structural-acoustic system design The Journal of Mechanical Science and Technology 25:1893-1904
Kwon J-H, Lee D (2015) Variability analysis of vibrational responses in a passenger car considering the uncertainties of elastomers Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science doi:10.1177/0954406215612816
Lee D, Hwang I-S (2011) Analysis on the Dynamic Characteristics of a Rubber Mount Considering Temperature and Material Uncertainties Journal of the Computational Structural Engineering Institute of Korea 24:383-389
Lee D, Hwang I-S, Ahn T-S (2013) Uncertainty characterization of an Engine Mount Rubber and Variability Analysis of Dynamic Characteristics in a
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Youn B, Xi Z, Wang P (2008) Eigenvector dimension reduction (EDR) method for sensitivity-free probability analysis Structural and Multidisciplinary Optimization 37:13-28 doi:10.1007/s00158-007-0210-7
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