Non Linear Viscoelastic Constitutive Relation of Elastomers for Hysteresis Behavior

- Journal title : Transactions of the Korean Society of Mechanical Engineers A
- Volume 40, Issue 4, 2016, pp.353-362
- Publisher : The Korean Society of Mechanical Engineers
- DOI : 10.3795/KSME-A.2016.40.4.353

Title & Authors

Non Linear Viscoelastic Constitutive Relation of Elastomers for Hysteresis Behavior

Yoo, Sairom; Ju, Jaehyung; Choi, Seok-Ju; Kim, Dooman;

Yoo, Sairom; Ju, Jaehyung; Choi, Seok-Ju; Kim, Dooman;

Abstract

An accurate hysteresis model of an elastomer is important for quantifying viscoelastic energy loss. We suggest a highly nonlinear hyper-viscoelastic constitutive model of elastomers. The model captures a nonlinear viscoelastic characteristic by combining Yeoh's hyperelastic model and Hoofatt's hysteresis model used Neo-Hookean hyperelastic model. Analytical and numerical models were generated from uniaxial cyclic tests of an elastomer under a sinusoidal load with a mean strain of 150%, amplitudes of 20~80%, and frequencies of 0.02~0.2Hz. The viscoelastic model can highly capture the viscoelastic energy loss up to a strain of 230%.

Keywords

Viscoelastic;Non-linear;Hyperelastic;Constitutive Relation;

Language

Korean

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