APPLICATION OF DIFFERENT CONSTITUTIVE MODELS IN THE NONLINEAR FINITE ELEMENT METHOD FOR RUBBER PARTS

To evaluate the applicability of different constitutive models for chloroprene rubber boot, the finite element models of rubber boot and rubber material specimen are established by the HyperMesh and ABAQUS software. According to the uniaxial tension test, a series of rubber characteristic parameters, based on Mooney- Rivlin, Ogden as well as Yeoh constitutive models, are obtained through ABAQUS by fitting data. Then the finite element results for specimen and rubber boots of axial tension and compression under different working conditions are obtained. The comparison between the experiment and the finite element analysis shows that two coeficients of the Mooney-Rivlin model are very accurate when the tensile rate is not more than 100%. But if the tensile rates exceed 100%, the Yeoh and Ogden constitutive model yields more accurate results.