Parameter Identification for a Hyperelastic Material Model of an Elastomer Rubber Boot

In order to develop a reliable model for a rubber boot of a constant velocity (CV) joint, optiSLang was used for parameter identifi cation and direct optimization to fi t the simulated stress strain curves to the experimental data.

Parameter Identification for a Hyperelastic Material Model of an Elastomer Rubber Boot

The purpose of this investigation is to develop a stable and reliable hyperelastic material model for a rubber boot of a constant velocity (CV) joint. Uniaxial tensile test data and simple shear test data were approached to characterize the mechanical behavior. The measurement data were used to determine the parameters of the Ogden model by the reverse engineering method. Parameter variations have been analyzed in a sensitivity study. Furthermore a direct optimization with an adaptive response surface method was done to fit the stress strain curves to the experimental data using optiSLang version 5.0. The results of a fluid penetration analysis presented in this paper were obtained by using a two dimensional axis symmetric model.

The results show an increased s-punch shaped deformation of the rubber boot caused by increasing a length change compensation of the CV joint and an additional fluid pressure load. Finally the deformation stops with self-contact at boot surface. This result correlates well with pneumatic experiments.

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