# Exercise 2: Tensile Test of Elastomer

In this exercise, you will perform a uni-axial tensile test on a rubber strip (2mmx5mmx50mm).

Hyper-elastic material constants have been sourced from reference^{[3]}.

Hyper-elastic materials are large strain materials when compared to metals. In case of hyper-elastic materials the non-linear relation between stress and strain is derived from a strain energy density function. Currently MotionSolve supports three hyper-elastic material models: Neo-Hookean, Mooney–Rivlin, and Yeoh.

## Add a New Material Property

In this step, you will add a new material property.

## Model the Rubber Strip

In this step, you will model the rubber strip for the tensile test.

## Add Constraints

In this step, you will create constraints for the rubber strip model.

## Add Outputs

Now you will create outputs to measure engineering strain and engineering stress values.

Engineering Strain =

Engineering Stress =

## Solve and Post-Process the Model

## References

### JUSSI T, SOPANEN and AKI M. MIKKOLA:

Description of Elastic Forces in Absolute Nodal Coordinate Formulation. Journal of Nonlinear Dynamics 34: 53– 74, 2003.

### Oleg Dmitrochenko:

Finite elements using absolute nodal coordinates for large deformation flexible multibody dynamics. Proceedings of the Third International Conference on Advanced Computational Methods in Engineering (ACOMEN 2005).

### Sung Pil Jung, TaeWon Park, Won Sun Chung:

Dynamic analysis of rubber like material using absolute nodal coordinate formulation based on the non-linear constitutive law. Journal of Nonlinear Dyn (2011) 63: 149–157.