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Non Linear Viscoelastic Constitutive Relation of Elastomers for Hysteresis Behavior

히스테리시스 거동을 하는 탄성체의 비선형 점탄성 구성방정식

Yoo, Sairom;Ju, Jaehyung;Choi, Seok-Ju;Kim, Dooman
유새롬;주재형;최석주;김두만

  • Received : 2015.10.05
  • Accepted : 2016.02.10
  • Published : 2016.04.01

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

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