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;
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%.
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