[abaqusnewbie22]

How do you do?

I would like to simulate a substitute test for the compression test for hyperelastic materials in Abaqus. I have experimentally determined a lattice structure, test data from a compression test and transverse contraction number.

Now my question is:

If I enter the test data for stress in MPa and strain (nominalized 0.8 instead of 80%), the test data is not ideally mapped. The FEM results are much higher.

I have read in the Abaqus documentation that the test data from a compression test should be entered with a negative sign in the test data, for example

-0.1 for the strain and -0.0009 for the stress.

Nevertheless, the Hyperfoam/Hyperelastic material models do not match the test data perfectly. For the comparison, I export the reaction forces on my rectangle from Abaqus, the specified unit of the reaction force should then be in Newtons if my entire model and my forced deformation was modeled in mm, right?

Perhaps someone has another tip that I could look at?

Does anyone have an idea why the bad correlation is stable and the good correlation is unstable?



Best regards and thanks for the tips

[Georgiaava]

Calibration is a fundamental requirement for thermoanalytical investigations. The knowledge of a quantitatively defined relationship between the value indicated by the measuring monkey type instrument and the correct value is essential. similar to the Model Tree. In this format you can expand and collapse categories to help locate a desired material. Figure 1 shows a simple material library containing metal materials.One of the best examples is automatic time stepping in nonlinear static, dynamic and heat transfer problems: Abaqus chooses and continuously adjusts the time increments automatically.