Week-6 Calculate the Stretch Ratio by comparing the ELFORM (-2,-1,1,2) with Ogden_Material Model.

Objective: To create a block of 10mmx10mmx10mm dimension with 10 elements for each direction and use the material card attached (Ogden_Material.k) that is representative of the material properties from the above figure.

To use appropriate boundary conditions to simulate tensile behavior for the model and finally compare the results from your simulation to the plot above up to stretch ratio 5. Only the uniaxial plot is to be compared.

To compare the results for the simulation using ELFORM = 1, 2, -1, -2

Procedure:

open the provided file in LS-Prepost and navigate shape mesher option in mesh menu in the right ribbon.

Enter the show values above to create a box solid with ten elements in XYZ's direction.

A solid section card is created with an elform 1

The material card is provided, and no value is changed in the card. Then, part is defined properly with a proper name, and the material and section are assigned to the solid box.

Additionally, to add stability to the model, two more SPC are created in the lateral and longitudinal direction of the cube's face. They are constrained in y and z- direction, respectively.

Additionally, to add stability to the model, two more SPC are created in the lateral and longitudinal direction of the cube's face. They are constrained in y- and z- direction, respectively. on the opposite face of this cube, displacement is provided as a prescribed motion.

The displacement curve is defined using a curve keyword from the define deck.

To solve this particular simulation implicit solver is chosen. IMPLICIT_AUTO, IMPLICIT_GENERAL, IMPLICIT_SOLUTION, and IMPLICIT_SOLVER.

Run LS-DYNA

ELFORM 1 - Result

https://drive.google.com/file/d/1EYFYbIJ-xR-zl113RSaru4w2ldZVQT5a/view?usp=drive_link

https://drive.google.com/file/d/1x92K1H9I4iS3jb3LV3RUnLBSvPKWlVXv/view?usp=drive_link

ELFORM 2 - Result

https://drive.google.com/file/d/1P-TPbNsHofKUjw5_rpjCqmA90_Pkd8ZT/view?usp=drive_link

https://drive.google.com/file/d/1OXGZ4A95YdCVqbAVTlanqpGqztMpTk82/view?usp=drive_link