Non-linear FEA support testing for elastomer parts

FEA program for non-linear stress analysis of elastomers is performed by utilizing two material models: * Mooney-Rivlin Model * Ogden Model. The Mooney-Rivlin model is the most widely used model for elastomer analysis. The basic problem facing the design engineer is how to obtain the material coefficients needed to use these two models in FEA. As expected, the effectiveness of design analysis is directly related to the quality of the material input material coefficients. This paper will discuss various testing techniques used for developing elastomer material constants. Also, the intent of this paper is to show how aging or service conditions can be incorporated to obtain material coefficients for elastomer parts.