Week - 10 Hyperelastic Material Models

Aim: To calculate the Mooney Rivlin and Odgen material Constants and Compare both using stress-strain data from a dogbone specimen tensile test with 100 percent strain

Procedure: The model was imported was having few keywords and few were prepared for the tensile test to happen

1.The Curve was defined for the displacement and Material,with define keyword

2.Then after this boundary conditions were applied to the model

The one end of the nodes were constrained in all direction expect y

the middle nodes were constrained only in y direction

on the end on RHS the boundary conditons were apllied with Defined load curve

3.Then after this simulation was run and below is the Von misses stress plotted for the model

4.Stress Vs strain for MAT 77_hyperelastic

For Odgen Constant the parameters will remain the same just the MAT_77_H is changed to MAT_77_O

1.The MAT77_H Card was changed MAT77_O

2.The other parameters were kept as it is and simulation was run

3.The Stress strain Curve is plotted below as shown in fig

Conclusion : Hence completed the simulation for both material cases and compared the results for the both and both follow the linear curve